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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.

A046681 Numbers k such that the number of divisors of k and sum of 4th powers of divisors of k are relatively prime.

Table of values

n a(n)
1 1
2 2
3 8
4 9
5 18
6 64
7 72
8 128
9 625
10 729
11 1024
12 1152
13 1250
14 1458
15 4096
16 5000
17 5625
18 5832
19 6561
20 8192
21 9216
22 11250
23 13122
24 15625
25 31250
26 32768
27 40000
28 45000
29 46656
30 52488
31 59049
32 65536
33 80000
34 93312
35 117649
36 118098
37 125000
38 235298
39 262144
40 294912

List of values

[1, 2, 8, 9, 18, 64, 72, 128, 625, 729, 1024, 1152, 1250, 1458, 4096, 5000, 5625, 5832, 6561, 8192, 9216, 11250, 13122, 15625, 31250, 32768, 40000, 45000, 46656, 52488, 59049, 65536, 80000, 93312, 117649, 118098, 125000, 235298, 262144, 294912]

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

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