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.

A277793 Numbers k such that the arithmetic and geometric means of the divisors of k are both integers.

Table of values

n a(n)
1 1
2 49
3 169
4 361
5 961
6 1369
7 1849
8 3721
9 4489
10 5329
11 6241
12 8281
13 9409
14 10609
15 11881
16 14641
17 16129
18 17689
19 19321
20 22801
21 24649
22 26569
23 32761
24 37249
25 39601
26 44521
27 47089
28 49729
29 52441
30 58081
31 61009
32 67081
33 73441
34 76729
35 80089
36 87616
37 90601
38 94249
39 97969
40 109561
41 113569
42 121801
43 134689

List of values

[1, 49, 169, 361, 961, 1369, 1849, 3721, 4489, 5329, 6241, 8281, 9409, 10609, 11881, 14641, 16129, 17689, 19321, 22801, 24649, 26569, 32761, 37249, 39601, 44521, 47089, 49729, 52441, 58081, 61009, 67081, 73441, 76729, 80089, 87616, 90601, 94249, 97969, 109561, 113569, 121801, 134689]

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

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