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.

A300116 a(n) = Sum_{k=0..n} binomial(2k,k)^3 * binomial(2n-2k,n-k) * 2^(4*(n-k)).

Table of values

n a(n)
0 1
1 40
2 2008
3 109120
4 6173656
5 357903040
6 21090174400
7 1257411781120
8 75630327895000
9 4580277582101440
10 278915640538355008
11 17061127317021130240
12 1047543937631077672384
13 64523332938885758410240
14 3985152917145136901283328
15 246717298245058901071237120

List of values

[1, 40, 2008, 109120, 6173656, 357903040, 21090174400, 1257411781120, 75630327895000, 4580277582101440, 278915640538355008, 17061127317021130240, 1047543937631077672384, 64523332938885758410240, 3985152917145136901283328, 246717298245058901071237120]