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.

A279964 a(n) = Sum_{k=1..n-1} sigma_3(k)*sigma_7(n-k).

Table of values

n a(n)
1 0
2 1
3 138
4 3377
5 39890
6 297550
7 1623980
8 7065329
9 25808790
10 82305816
11 234756742
12 611706830
13 1474831246
14 3334313204
15 7118797268
16 14485772017
17 28206850488
18 52921773667
19 95877425634
20 168644231672
21 288301373792
22 481166453010
23 784226941604
24 1253068878542
25 1962356045590

List of values

[0, 1, 138, 3377, 39890, 297550, 1623980, 7065329, 25808790, 82305816, 234756742, 611706830, 1474831246, 3334313204, 7118797268, 14485772017, 28206850488, 52921773667, 95877425634, 168644231672, 288301373792, 481166453010, 784226941604, 1253068878542, 1962356045590]

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

Content is available under The OEIS End-User License Agreement.