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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.

A358936 Numbers k such that for some r we have phi(1) + ... + phi(k - 1) = phi(k + 1) + ... + phi(k + r), where phi(i) = A000010(i).

Table of values

n a(n)
1 3
2 4
3 6
4 38
5 40
6 88
7 244
8 578
9 581
10 602
11 1663
12 2196
13 10327
14 17358
15 28133
16 36163
17 42299
18 123556
19 149788
20 234900
21 350210
22 366321
23 620478
24 694950
25 869880
26 905807
27 934286
28 1907010
29 2005592
30 5026297
31 7675637
32 11492764
33 12844691
34 14400214
35 15444216
36 18798939
37 20300872

List of values

[3, 4, 6, 38, 40, 88, 244, 578, 581, 602, 1663, 2196, 10327, 17358, 28133, 36163, 42299, 123556, 149788, 234900, 350210, 366321, 620478, 694950, 869880, 905807, 934286, 1907010, 2005592, 5026297, 7675637, 11492764, 12844691, 14400214, 15444216, 18798939, 20300872]

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

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