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.

A332776 a(n) = 1 + Sum_{k=1..n-1} binomial(n-1,k) * a(k) * a(n-k-1).

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 18
5 83
6 464
7 3041
8 22810
9 192595
10 1807328
11 18658097
12 210138882
13 2563990859
14 33691089824
15 474327797585
16 7123141539610
17 113656386574099
18 1920170741071280
19 34242622099969217
20 642792206343361602
21 12669617513914228907
22 261613287097165614224
23 5647565141926833774977

List of values

[1, 1, 2, 5, 18, 83, 464, 3041, 22810, 192595, 1807328, 18658097, 210138882, 2563990859, 33691089824, 474327797585, 7123141539610, 113656386574099, 1920170741071280, 34242622099969217, 642792206343361602, 12669617513914228907, 261613287097165614224, 5647565141926833774977]