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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.

A372927 a(n) = Sum_{1 <= x_1, x_2 <= n} gcd(x_1, x_2, n)^5.

Table of values

n a(n)
1 1
2 35
3 251
4 1132
5 3149
6 8785
7 16855
8 36272
9 61065
10 110215
11 161171
12 284132
13 371461
14 589925
15 790399
16 1160896
17 1420145
18 2137275
19 2476459
20 3564668
21 4230605
22 5640985
23 6436871
24 9104272
25 9841225
26 13001135
27 14839443
28 19079860
29 20511989
30 27663965
31 28630111
32 37149440
33 40453921

List of values

[1, 35, 251, 1132, 3149, 8785, 16855, 36272, 61065, 110215, 161171, 284132, 371461, 589925, 790399, 1160896, 1420145, 2137275, 2476459, 3564668, 4230605, 5640985, 6436871, 9104272, 9841225, 13001135, 14839443, 19079860, 20511989, 27663965, 28630111, 37149440, 40453921]

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

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