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.

A188256 Number of arrangements of 10 nonzero numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.

Table of values

n a(n)
1 0
2 57808
3 1657632
4 20265640
5 123729664
6 591604824
7 2026547348
8 6250275112
9 16132348896
10 38938013924

List of values

[0, 57808, 1657632, 20265640, 123729664, 591604824, 2026547348, 6250275112, 16132348896, 38938013924]