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.

A336227 a(0) = 1; a(n) = n * Sum_{k=0..n-1} binomial(n-1,k)^2 * a(k).

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 292
5 4425
6 89106
7 2280901
8 71928872
9 2728450017
10 122145511510
11 6354868381521
12 379376236939404
13 25710543779239501
14 1960001963705060926
15 166753195643254805565
16 15724259680648667902096
17 1633462474351643785483457
18 185931510605274506452763166

List of values

[1, 1, 4, 27, 292, 4425, 89106, 2280901, 71928872, 2728450017, 122145511510, 6354868381521, 379376236939404, 25710543779239501, 1960001963705060926, 166753195643254805565, 15724259680648667902096, 1633462474351643785483457, 185931510605274506452763166]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.