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.

A222523 O.g.f.: Sum_{n>=0} (n^2+n+1)^n * exp(-(n^2+n+1)*x) * x^n / n!.

Table of values

n a(n)
0 1
1 2
2 16
3 208
4 3930
5 97956
6 3038968
7 112911296
8 4889301222
9 241822567180
10 13450863716048
11 831128810329632
12 56483233790927556
13 4187162929534240488
14 336244786874092579920
15 29077531985735270053632
16 2694076376135933879002566
17 266245292488900189811625612
18 27956094249950913890814701248

List of values

[1, 2, 16, 208, 3930, 97956, 3038968, 112911296, 4889301222, 241822567180, 13450863716048, 831128810329632, 56483233790927556, 4187162929534240488, 336244786874092579920, 29077531985735270053632, 2694076376135933879002566, 266245292488900189811625612, 27956094249950913890814701248]