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.

A216143 E.g.f.: exp( Shw(x) ) where Shw(x) = Sum_{n>=0} (2*n+2)^(2*n) * x^(2*n+1)/(2*n+1)!.

Table of values

n a(n)
0 1
1 1
2 1
3 17
4 65
5 1457
6 10657
7 307841
8 3403521
9 121414689
10 1810995009
11 77157569073
12 1453708980033
13 72128854709329
14 1644987113677793
15 93235988902015009
16 2498605538747794433
17 159345372352540823361
18 4909485778021467744897
19 348042700926255242296657

List of values

[1, 1, 1, 17, 65, 1457, 10657, 307841, 3403521, 121414689, 1810995009, 77157569073, 1453708980033, 72128854709329, 1644987113677793, 93235988902015009, 2498605538747794433, 159345372352540823361, 4909485778021467744897, 348042700926255242296657]