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.

A188328 Number of nondecreasing arrangements of n nonzero numbers in -(n+2)..(n+2) with sum zero.

Table of values

n a(n)
1 0
2 4
3 12
4 61
5 288
6 1488
7 7836
8 42593
9 236130
10 1333130
11 7636298
12 44294040
13 259682196
14 1536666930
15 9167492664
16 55086510571
17 333133752902
18 2026193778596
19 12387543671686
20 76088580071361
21 469354099705916
22 2906492292139022

List of values

[0, 4, 12, 61, 288, 1488, 7836, 42593, 236130, 1333130, 7636298, 44294040, 259682196, 1536666930, 9167492664, 55086510571, 333133752902, 2026193778596, 12387543671686, 76088580071361, 469354099705916, 2906492292139022]

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

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