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.

A158649 Number of integral solutions to the equation (x_1)^3 + ... + (x_n)^3 = (x_1 + ... + x_n)^2 with 1 <= x_1 <= ... <= x_n.

Table of values

n a(n)
0 1
1 1
2 2
3 2
4 4
5 5
6 18
7 30
8 94
9 226
10 715
11 2024
12 6546
13 20622
14 69459
15 232406
16 810943
17 2828246
18 10133324
19 36435912
20 133372054
21 490864448
22 1829474693
23 6858293057
24 25951243663
25 98749175365
26 378522780879

List of values

[1, 1, 2, 2, 4, 5, 18, 30, 94, 226, 715, 2024, 6546, 20622, 69459, 232406, 810943, 2828246, 10133324, 36435912, 133372054, 490864448, 1829474693, 6858293057, 25951243663, 98749175365, 378522780879]

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

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