A171185 - cp's OEIS frontend

A171185 G.f.: exp( Sum_{n>=1} (x^n/n)*[Sum_{k=0..[n/2]} A034807(n,k)^3] ), where A034807 is a triangle of Lucas polynomials.

n	a(n)
0	1
1	1
2	5
3	14
4	40
5	126
6	408
7	1332
8	4473
9	15377
10	53627
11	189724
12	680475
13	2467975
14	9038578
15	33399571
16	124400702
17	466619283
18	1761467038
19	6688059913
20	25527326897
21	97901917060
22	377123873505
23	1458573962761
24	5662223702216
25	22056563938599

[1, 1, 5, 14, 40, 126, 408, 1332, 4473, 15377, 53627, 189724, 680475, 2467975, 9038578, 33399571, 124400702, 466619283, 1761467038, 6688059913, 25527326897, 97901917060, 377123873505, 1458573962761, 5662223702216, 22056563938599]

cp's OEIS Frontend

A171185 G.f.: exp( Sum_{n>=1} (x^n/n)*[Sum_{k=0..[n/2]} A034807(n,k)^3] ), where A034807 is a triangle of Lucas polynomials.

Table of values

List of values