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.

A188229 Number of nondecreasing arrangements of n numbers in -n..n with sum zero and not more than two numbers equal.

Table of values

n a(n)
1 1
2 3
3 7
4 30
5 119
6 527
7 2395
8 11376
9 55368
10 275735
11 1397063
12 7185356
13 37419881
14 196993233
15 1046785509
16 5608211846
17 30264466262
18 164375822152
19 897938065590
20 4930713542112
21 27202861579741
22 150721902660263
23 838367664692809

List of values

[1, 3, 7, 30, 119, 527, 2395, 11376, 55368, 275735, 1397063, 7185356, 37419881, 196993233, 1046785509, 5608211846, 30264466262, 164375822152, 897938065590, 4930713542112, 27202861579741, 150721902660263, 838367664692809]

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

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