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.

A201808 Number of arrays of n integers in -5..5 with sum zero and equal numbers of elements greater than zero and less than zero.

Table of values

n a(n)
1 1
2 11
3 31
4 571
5 2651
6 42821
7 263201
8 3688091
9 27050251
10 343631641
11 2832605381
12 33728463781
13 300829918741
14 3434173821131
15 32324196127871
16 359135576566811
17 3508242939891611
18 38316667628995001
19 384106315200918101

List of values

[1, 11, 31, 571, 2651, 42821, 263201, 3688091, 27050251, 343631641, 2832605381, 33728463781, 300829918741, 3434173821131, 32324196127871, 359135576566811, 3508242939891611, 38316667628995001, 384106315200918101]

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

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