cp's OEIS Frontend

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.

A054756 Numbers k such that phi(k) and cototient(k) are squares but k is not in A054755.

Table of values

n a(n)
1 1
2 468
3 1417
4 1872
5 2340
6 3145
7 4100
8 4212
9 7488
10 9360
11 14841
12 15588
13 16400
14 16848
15 20329
16 21060
17 29952
18 31417
19 37440
20 37908
21 45097
22 49833
23 58500
24 62352
25 63529
26 63945
27 65600
28 67392
29 69700
30 78625
31 79092
32 83569
33 84169
34 84240
35 88929
36 102500

List of values

[1, 468, 1417, 1872, 2340, 3145, 4100, 4212, 7488, 9360, 14841, 15588, 16400, 16848, 20329, 21060, 29952, 31417, 37440, 37908, 45097, 49833, 58500, 62352, 63529, 63945, 65600, 67392, 69700, 78625, 79092, 83569, 84169, 84240, 88929, 102500]

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

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