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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.

A227306 Numbers k that divide sigma(k) + sigma(k-1).

Table of values

n a(n)
1 2
2 6
3 34
4 50
5 216
6 236
7 262
8 386
9 898
10 924
11 945
12 1456
13 2380
14 5356
15 6468
16 6624
17 8362
18 14100
19 23496
20 26938
21 46594
22 80876
23 196344
24 212796
25 1661136
26 4070200
27 4160920
28 4626700
29 5244548
30 5462384
31 17062316
32 60464628
33 217408416
34 248621604
35 262792908
36 265371336
37 323987588

List of values

[2, 6, 34, 50, 216, 236, 262, 386, 898, 924, 945, 1456, 2380, 5356, 6468, 6624, 8362, 14100, 23496, 26938, 46594, 80876, 196344, 212796, 1661136, 4070200, 4160920, 4626700, 5244548, 5462384, 17062316, 60464628, 217408416, 248621604, 262792908, 265371336, 323987588]

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

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