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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.

A054754 Totient(n) and cototient(n) are squares.

Table of values

n a(n)
1 1
2 2
3 5
4 8
5 17
6 32
7 37
8 101
9 125
10 128
11 197
12 257
13 401
14 468
15 512
16 577
17 677
18 1297
19 1417
20 1601
21 1872
22 2048
23 2340
24 2917
25 3125
26 3137
27 3145
28 4100
29 4212
30 4357
31 4913
32 5477
33 7057
34 7488
35 8101
36 8192
37 8837
38 9360
39 12101
40 13457
41 14401
42 14841
43 15377
44 15588
45 15877

List of values

[1, 2, 5, 8, 17, 32, 37, 101, 125, 128, 197, 257, 401, 468, 512, 577, 677, 1297, 1417, 1601, 1872, 2048, 2340, 2917, 3125, 3137, 3145, 4100, 4212, 4357, 4913, 5477, 7057, 7488, 8101, 8192, 8837, 9360, 12101, 13457, 14401, 14841, 15377, 15588, 15877]

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

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