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.

A348703 a(n) = Sum_{x_1+x_2+ ... +x_n=n, 0 <= x_1, x_2, ... , x_n <= n} ((n-1)*n)!/((n-x_1)! * (n-x_2)! * ... * (n-x_n)!).

Table of values

n a(n)
0 1
1 1
2 4
3 510
4 6745200
5 19038823123320
6 19549762329157865925120
7 11131011767163918530071193512089600
8 4977434038774545402380656971924547417738384800000

List of values

[1, 1, 4, 510, 6745200, 19038823123320, 19549762329157865925120, 11131011767163918530071193512089600, 4977434038774545402380656971924547417738384800000]