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.

A386510 a(0) = 1; a(n) = a(n-1) + Sum_{k=0..n-1} (1 + k) * binomial(k+1,2) * binomial(n-1,k) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 3
3 34
4 949
5 52421
6 5050711
7 779516095
8 181069531665
9 60337677803905
10 27766510630927741
11 17108421087708824831
12 13757393965653865220629
13 14130398908817131991819653
14 18201370833558663815315691987
15 28941823262680770630349968403381
16 56033750665620660972762531436196641

List of values

[1, 1, 3, 34, 949, 52421, 5050711, 779516095, 181069531665, 60337677803905, 27766510630927741, 17108421087708824831, 13757393965653865220629, 14130398908817131991819653, 18201370833558663815315691987, 28941823262680770630349968403381, 56033750665620660972762531436196641]