A211894 - cp's OEIS frontend

A211894 G.f.: exp( Sum_{n>=1} 3 * Jacobsthal(n)^2 * x^n/n ), where Jacobsthal(n) = A001045(n).

n	a(n)
0	1
1	3
2	6
3	18
4	57
5	195
6	684
7	2460
8	8970
9	33102
10	123204
11	461868
12	1741410
13	6597750
14	25099584
15	95822928
16	366943881
17	1408947675
18	5422742910
19	20915079258
20	80820382425
21	312839889219
22	1212812010804
23	4708415402772
24	18302630040504
25	71230126892088
26	277514015733168

[1, 3, 6, 18, 57, 195, 684, 2460, 8970, 33102, 123204, 461868, 1741410, 6597750, 25099584, 95822928, 366943881, 1408947675, 5422742910, 20915079258, 80820382425, 312839889219, 1212812010804, 4708415402772, 18302630040504, 71230126892088, 277514015733168]

cp's OEIS Frontend

A211894 G.f.: exp( Sum_{n>=1} 3 * Jacobsthal(n)^2 * x^n/n ), where Jacobsthal(n) = A001045(n).

Table of values

List of values