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.

A385875 a(n) = 1 + Sum_{k=0..n-1} binomial(k+2,3) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 2
3 10
4 111
5 2347
6 84757
7 4837213
8 411373408
9 49787445476
10 8265626303452
11 1826809978098228
12 524311794034090050
13 191377585766768936606
14 87269255118865044728501
15 48958442598180565027265909
16 33340876732769115354996751746
17 27239595466972699678481509900786

List of values

[1, 1, 2, 10, 111, 2347, 84757, 4837213, 411373408, 49787445476, 8265626303452, 1826809978098228, 524311794034090050, 191377585766768936606, 87269255118865044728501, 48958442598180565027265909, 33340876732769115354996751746, 27239595466972699678481509900786]