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.

A386455 a(0) = 1; a(n) = a(n-1) + Sum_{k=0..n-1} binomial(k+4,5) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 2
3 15
4 344
5 19962
6 2555592
7 649147331
8 301207446317
9 239159429472132
10 308276821981867349
11 617786997525975886618
12 1856450241316927094671750
13 8112688179283378712969957414
14 50217541700003149682333160103969
15 430364340522944093019900101527085125

List of values

[1, 1, 2, 15, 344, 19962, 2555592, 649147331, 301207446317, 239159429472132, 308276821981867349, 617786997525975886618, 1856450241316927094671750, 8112688179283378712969957414, 50217541700003149682333160103969, 430364340522944093019900101527085125]