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.

A188324 Number of nondecreasing arrangements of n nonzero numbers in -(2n-2)..(2n-2) with sum zero.

Table of values

n a(n)
1 0
2 2
3 8
4 61
5 472
6 4050
7 36454
8 341988
9 3306612
10 32757830
11 330964946
12 3398830478
13 35386215292
14 372754193214
15 3966423984516
16 42579631811396
17 460648926971334
18 5017891492413126
19 54996459314116816
20 606092251444553993

List of values

[0, 2, 8, 61, 472, 4050, 36454, 341988, 3306612, 32757830, 330964946, 3398830478, 35386215292, 372754193214, 3966423984516, 42579631811396, 460648926971334, 5017891492413126, 54996459314116816, 606092251444553993]

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

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