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.

A286928 Number of solutions to the equation x_1 + ... + x_n =0 satisfying -n<=x_i<=n (1<=i<=n).

Table of values

n a(n)
0 1
1 1
2 5
3 37
4 489
5 8801
6 204763
7 5832765
8 197018321
9 7702189345
10 342237634221
11 17039997700639
12 939906923598525
13 56899727331724863
14 3751071253402671045
15 267515957818316650221
16 20522595752454270972321
17 1685273102403664075044305
18 147501996974331775160471677

List of values

[1, 1, 5, 37, 489, 8801, 204763, 5832765, 197018321, 7702189345, 342237634221, 17039997700639, 939906923598525, 56899727331724863, 3751071253402671045, 267515957818316650221, 20522595752454270972321, 1685273102403664075044305, 147501996974331775160471677]

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

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