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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.

A068495 Composite n such that n reduced mod(phi(n)) = sigma(n) reduced mod(n).

Table of values

n a(n)
1 6
2 56
3 260
4 780
5 992
6 1976
7 2156
8 3696
9 5520
10 13800
11 16256
12 19872
13 22560
14 23688
15 25232
16 41072
17 87000
18 89964
19 133984
20 145888
21 366720
22 785808
23 851760
24 1100864
25 1235052
26 1270208
27 1439552
28 1470720
29 2129400
30 2237888
31 4729664
32 8690112

List of values

[6, 56, 260, 780, 992, 1976, 2156, 3696, 5520, 13800, 16256, 19872, 22560, 23688, 25232, 41072, 87000, 89964, 133984, 145888, 366720, 785808, 851760, 1100864, 1235052, 1270208, 1439552, 1470720, 2129400, 2237888, 4729664, 8690112]

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

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