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.

A188233 Number of nondecreasing arrangements of n numbers in -(n+4)..(n+4) with sum zero and not more than two numbers equal.

Table of values

n a(n)
1 1
2 7
3 31
4 172
5 903
6 4859
7 26123
8 141519
9 769915
10 4209720
11 23118268
12 127495912
13 705885128
14 3922515554
15 21871461990
16 122341995397
17 686381562245
18 3861568338064
19 21781724157952
20 123162942539680
21 698010289536681

List of values

[1, 7, 31, 172, 903, 4859, 26123, 141519, 769915, 4209720, 23118268, 127495912, 705885128, 3922515554, 21871461990, 122341995397, 686381562245, 3861568338064, 21781724157952, 123162942539680, 698010289536681]

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

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