A195254 - cp's OEIS frontend

A195254 O.g.f.: Sum_{n>=0} 2(n+2)^(n-1)x^n/(1+n*x)^n.

n	a(n)
0	1
1	2
2	6
3	20
4	76
5	336
6	1744
7	10592
8	74400
9	595712
10	5362432
11	53626368
12	589894144
13	7078737920
14	92023609344
15	1288330563584
16	19324958519296
17	309199336439808
18	5256388719738880
19	94614996955824128
20	1797684942161707008
21	35953698843236237312
22	755027675707965177856

[1, 2, 6, 20, 76, 336, 1744, 10592, 74400, 595712, 5362432, 53626368, 589894144, 7078737920, 92023609344, 1288330563584, 19324958519296, 309199336439808, 5256388719738880, 94614996955824128, 1797684942161707008, 35953698843236237312, 755027675707965177856]

cp's OEIS Frontend

A195254 O.g.f.: Sum_{n>=0} 2(n+2)^(n-1)x^n/(1+n*x)^n.

Table of values

List of values

cp's OEIS Frontend

A195254 O.g.f.: Sum_{n>=0} 2*(n+2)^(n-1)*x^n/(1+n*x)^n.

Table of values

List of values

A195254 O.g.f.: Sum_{n>=0} 2(n+2)^(n-1)x^n/(1+n*x)^n.