A218118 - cp's OEIS frontend

A218118 G.f.: A(x) = exp( Sum_{n>=1} A005261(n)/2*x^n/n ) where A005261(n) = Sum_{k=0..n} C(n,k)^5.

n	a(n)
0	1
1	1
2	9
3	90
4	1350
5	22623
6	430338
7	8786367
8	190473510
9	4314088755
10	101271596421
11	2446843690671
12	60557118315384
13	1529356193511525
14	39297344717526330
15	1024958399339092751
16	27083985050402731646
17	723942169622258974974
18	19548657715769940178730

[1, 1, 9, 90, 1350, 22623, 430338, 8786367, 190473510, 4314088755, 101271596421, 2446843690671, 60557118315384, 1529356193511525, 39297344717526330, 1024958399339092751, 27083985050402731646, 723942169622258974974, 19548657715769940178730]

cp's OEIS Frontend

A218118 G.f.: A(x) = exp( Sum_{n>=1} A005261(n)/2*x^n/n ) where A005261(n) = Sum_{k=0..n} C(n,k)^5.

Table of values

List of values