cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A113286 Numbers k such that S(S(k))=k, with S(n)=sigma(n)/4: 1/4-sociable numbers of order 1 or 2.

Table of values

n a(n)
1 30240
2 32760
3 859320
4 898560
5 2096640
6 2178540
7 2234232
8 23569920
9 45532800
10 54996480
11 61281792
12 142990848
13 422688000
14 436205952
15 1379454720

List of values

[30240, 32760, 859320, 898560, 2096640, 2178540, 2234232, 23569920, 45532800, 54996480, 61281792, 142990848, 422688000, 436205952, 1379454720]