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.

A188116 Number of strictly increasing arrangements of n nonzero numbers in -(n+1)..(n+1) with sum zero.

Table of values

n a(n)
1 0
2 3
3 4
4 16
5 42
6 137
7 426
8 1398
9 4622
10 15594
11 53252
12 184060
13 642392
14 2261829
15 8024726
16 28664946
17 103015222
18 372234190
19 1351655526
20 4930080182
21 18055480464
22 66371559466
23 244817099870
24 905883648170
25 3361795172242
26 12509691344838

List of values

[0, 3, 4, 16, 42, 137, 426, 1398, 4622, 15594, 53252, 184060, 642392, 2261829, 8024726, 28664946, 103015222, 372234190, 1351655526, 4930080182, 18055480464, 66371559466, 244817099870, 905883648170, 3361795172242, 12509691344838]

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

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