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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.

A340713 Numbers k such that sigma(k+1) = 4 * sigma(k).

Table of values

n a(n)
1 37033919
2 141162839
3 264995639
4 596672999
5 606523679
6 630777839
7 791656319
8 920424119
9 1060332839
10 1379454719
11 1954690919
12 3799661039
13 4024838999
14 4633959959
15 5393988599
16 5935994063
17 8831231639
18 9866482079
19 11237657759
20 11273710139
21 12266364599
22 14440498379
23 14952625379

List of values

[37033919, 141162839, 264995639, 596672999, 606523679, 630777839, 791656319, 920424119, 1060332839, 1379454719, 1954690919, 3799661039, 4024838999, 4633959959, 5393988599, 5935994063, 8831231639, 9866482079, 11237657759, 11273710139, 12266364599, 14440498379, 14952625379]

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

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