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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.

A066218 Numbers k such that sigma(k) = Sum_{j|k, j sigma(j).

Table of values

n a(n)
1 198
2 608
3 11322
4 20826
5 56608
6 3055150
7 565344850
8 579667086
9 907521650
10 8582999958
11 13876688358
12 19244570848
13 195485816050
14 255701999358
15 1038635009650
16 1410759512050
17 3308222326688
18 6293446033554
19 12859914783762
20 15343909268584
21 18359652610976
22 19142664182226
23 41584649258178
24 45090324794034
25 56293124233554

List of values

[198, 608, 11322, 20826, 56608, 3055150, 565344850, 579667086, 907521650, 8582999958, 13876688358, 19244570848, 195485816050, 255701999358, 1038635009650, 1410759512050, 3308222326688, 6293446033554, 12859914783762, 15343909268584, 18359652610976, 19142664182226, 41584649258178, 45090324794034, 56293124233554]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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