One day, one decomposition
A217139: Numbers n such that phi(n) = phi(n+12), with Euler's totient function phi = A000010

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A217139.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A217139.html

One day, one decomposition
A216838: Odd primes for which 2 is not a primitive root

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A216838.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A216838.html

One day, one decomposition
A215940: Difference between the n-th and the first (identity) permutation of (0,...,m-1), interpreted as a decimal number, divided by 9 (for any m for which 10! >= m! >= n)

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A215940.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A215940.html

One day, one decomposition
A214423: Numbers n palindromic in only one base b, 2 <= b <= 10

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A214423.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A214423.html

Don't you wanna just hug that tail?~

Commission for Zer_Delta!

One day, one decomposition
A213382: Numbers n such that n^n mod (n + 2) = n

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A213382.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A213382.html

One day, one decomposition
A212168: Numbers n such that the maximal exponent in its prime factorization is less than the number of positive exponents (A051903(n) < A001221(n))

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A212168.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A212168.html

9:33pm And You Know That by Sequence
#KJAC #TheColoradoSound #Sequence

9:33pm And You Know That by Sequence
#KJAC #TheColoradoSound #Sequence

One day, one decomposition
A212166: Numbers k such that the maximum exponent in its prime factorization equals the number of positive exponents (A051903(k) = A001221(k))

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A212166.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A212166.html

One day, one decomposition
A212165: Numbers k such that the maximum exponent in its prime factorization is not less than the number of positive exponents (A051903(k) >= A001221(k))

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A212165.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A212165.html

One day, one decomposition
A212164: Numbers k such that the maximum exponent in its prime factorization is greater than the number of positive exponents (A051903(k) > A001221(k))

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A212164.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A212164.html

One day, one decomposition
A211223: Numbers k for which sigma(k) = sigma(x) + sigma(y), where k = x + y

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A211223.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A211223.html

I've been itching at a chance to do a sequence, and as it turned out, I had time to squeak out a quick 3-step one right before my arbitrary deadline! A lot of fun, and def something I want to do more of later! (Or sooner, if y'all want to give me money :P)
#transfur #transformation #tfeveryday #tftuesday #TFTG #TransMan #Lion #Feline #FullBody #Sequence #Sketch

See anything strange here?

One day, one decomposition
A210479: Primes p with p-1 and p+1 both practical: "Sandwich of the first kind"

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A210479.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A210479.html

One day, one decomposition
A209203: Values of the difference d for 4 primes in geometric-arithmetic progression with the minimal sequence {5*5^j + j*d}, j = 0 to 3

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A209203.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A209203.html

One day, one decomposition
A209202: Values of the difference d for 3 primes in geometric-arithmetic progression with the minimal sequence {3*3^j + j*d}, j = 0 to 2

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/A209202.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/A209202.html

One day, one decomposition
A209061: Exponentially squarefree numbers

3D graph, threejs - webGL https://decompwlj.com/3Dgraph/Exponentially_squarefree_numbers.html
2D graph, first 500 terms https://decompwlj.com/2Dgraph500terms/Exponentially_squarefree_numbers.html