A187741 - cp's OEIS frontend

A187741 G.f.: Sum_{n>=0} (1 + nx)^n x^n / (1 + x + n*x^2)^n.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	6
6	12
7	24
8	60
9	120
10	360
11	720
12	2520
13	5040
14	20160
15	40320
16	181440
17	362880
18	1814400
19	3628800
20	19958400
21	39916800
22	239500800
23	479001600
24	3113510400
25	6227020800
26	43589145600
27	87178291200
28	653837184000
29	1307674368000
30	10461394944000
31	20922789888000

[1, 1, 1, 2, 3, 6, 12, 24, 60, 120, 360, 720, 2520, 5040, 20160, 40320, 181440, 362880, 1814400, 3628800, 19958400, 39916800, 239500800, 479001600, 3113510400, 6227020800, 43589145600, 87178291200, 653837184000, 1307674368000, 10461394944000, 20922789888000]

cp's OEIS Frontend

A187741 G.f.: Sum_{n>=0} (1 + nx)^n x^n / (1 + x + n*x^2)^n.

Table of values

List of values

cp's OEIS Frontend

A187741 G.f.: Sum_{n>=0} (1 + n*x)^n * x^n / (1 + x + n*x^2)^n.

Table of values

List of values

A187741 G.f.: Sum_{n>=0} (1 + nx)^n x^n / (1 + x + n*x^2)^n.