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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.

A225983 Numbers k such that gcd(phi(k), tau(k)) = 1.

Table of values

n a(n)
1 1
2 2
3 4
4 16
5 25
6 64
7 81
8 100
9 121
10 256
11 289
12 484
13 529
14 729
15 841
16 1024
17 1156
18 1296
19 1600
20 1681
21 2116
22 2209
23 2401
24 2809
25 3025
26 3364
27 3481
28 4096
29 4624
30 5041
31 5184
32 6400
33 6724
34 6889
35 7225
36 7744
37 7921
38 8464
39 8836
40 10201
41 11236
42 11449
43 11664
44 12100
45 12769
46 13225

List of values

[1, 2, 4, 16, 25, 64, 81, 100, 121, 256, 289, 484, 529, 729, 841, 1024, 1156, 1296, 1600, 1681, 2116, 2209, 2401, 2809, 3025, 3364, 3481, 4096, 4624, 5041, 5184, 6400, 6724, 6889, 7225, 7744, 7921, 8464, 8836, 10201, 11236, 11449, 11664, 12100, 12769, 13225]

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

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