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.

A188113 Number of strictly increasing arrangements of n nonzero numbers in -(2n-2)..(2n-2) with sum zero.

Table of values

n a(n)
1 0
2 2
3 4
4 31
5 172
6 1154
7 8044
8 58595
9 439514
10 3379972
11 26513202
12 211413199
13 1709183316
14 13981482114
15 115537553904
16 963234521237
17 8093123460146
18 68468543003422
19 582819983344618
20 4988538052577712
21 42911585401063684

List of values

[0, 2, 4, 31, 172, 1154, 8044, 58595, 439514, 3379972, 26513202, 211413199, 1709183316, 13981482114, 115537553904, 963234521237, 8093123460146, 68468543003422, 582819983344618, 4988538052577712, 42911585401063684]

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

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