A194559 - cp's OEIS frontend

A194559 E.g.f.: exp( Sum_{n>=1} G_n(x)^n/n ) where G_n(x) = x + x*G_n(x)^n.

n	a(n)
0	1
1	1
2	4
3	18
4	132
5	900
6	10560
7	96600
8	1500240
9	19066320
10	369714240
11	5359163040
12	147177898560
13	2443958637120
14	76298578836480
15	1621294897622400
16	58906376034105600
17	1309870975014201600
18	60357698670132864000
19	1469955465552513139200
20	74262907856067567436800

[1, 1, 4, 18, 132, 900, 10560, 96600, 1500240, 19066320, 369714240, 5359163040, 147177898560, 2443958637120, 76298578836480, 1621294897622400, 58906376034105600, 1309870975014201600, 60357698670132864000, 1469955465552513139200, 74262907856067567436800]

cp's OEIS Frontend

A194559 E.g.f.: exp( Sum_{n>=1} G_n(x)^n/n ) where G_n(x) = x + x*G_n(x)^n.

Table of values

List of values