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.

A201810 Number of arrays of n integers in -7..7 with sum zero and equal numbers of elements greater than zero and less than zero.

Table of values

n a(n)
1 1
2 15
3 43
4 1471
5 7071
6 207621
7 1355145
8 33222463
9 266948431
10 5714583505
11 53305896645
12 1032485634181
13 10748736159253
14 193347106894215
15 2184638624782083
16 37202261536824063
17 447056372628222463

List of values

[1, 15, 43, 1471, 7071, 207621, 1355145, 33222463, 266948431, 5714583505, 53305896645, 1032485634181, 10748736159253, 193347106894215, 2184638624782083, 37202261536824063, 447056372628222463]

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

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