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.

A376831 Numbers k such that sigma(k + sigma(k)) = sigma(k) + sigma(sigma(k)), where sigma = A000203.

Table of values

n a(n)
1 1986
2 58920
3 88092
4 111276
5 201588
6 662160
7 1103076
8 1573536
9 1671056
10 1887900
11 3172434
12 4507152
13 4575124
14 8105188
15 10971936
16 42273728
17 56886840

List of values

[1986, 58920, 88092, 111276, 201588, 662160, 1103076, 1573536, 1671056, 1887900, 3172434, 4507152, 4575124, 8105188, 10971936, 42273728, 56886840]