A308417 - cp's OEIS frontend

A308417 Expansion of e.g.f. exp(x*(1 + x + x^2)/(1 - x^2)^2).

n	a(n)
0	1
1	1
2	3
3	25
4	145
5	1461
6	14011
7	169933
8	2231265
9	32572585
10	528302611
11	9146070561
12	174016032433
13	3498446485405
14	75954922790475
15	1737982233878101
16	42327522277348801
17	1084073452000879953
18	29253450397798616995
19	827617575903336189865
20	24503022168956714812881

[1, 1, 3, 25, 145, 1461, 14011, 169933, 2231265, 32572585, 528302611, 9146070561, 174016032433, 3498446485405, 75954922790475, 1737982233878101, 42327522277348801, 1084073452000879953, 29253450397798616995, 827617575903336189865, 24503022168956714812881]

cp's OEIS Frontend

A308417 Expansion of e.g.f. exp(x*(1 + x + x^2)/(1 - x^2)^2).

Table of values

List of values