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.

A336183 a(n) = n^2 + (1/n) * Sum_{k=1..n-1} binomial(n,k) * k * a(k) * (n-k)^2.

Table of values

n a(n)
1 1
2 5
3 23
4 154
5 1389
6 15636
7 211231
8 3329264
9 59969097
10 1215233380
11 27362096211
12 677690995488
13 18310602210445
14 535964033279780
15 16894811428737495
16 570603293774677696
17 20556251540382371217
18 786832900592755991364
19 31889277719673937849243
20 1364231113649221829763200

List of values

[1, 5, 23, 154, 1389, 15636, 211231, 3329264, 59969097, 1215233380, 27362096211, 677690995488, 18310602210445, 535964033279780, 16894811428737495, 570603293774677696, 20556251540382371217, 786832900592755991364, 31889277719673937849243, 1364231113649221829763200]