A308939 - cp's OEIS frontend

A308939 Expansion of e.g.f. 1 / (1 - Sum_{k>=1} (2k - 1)!!x^k/k!).

n	a(n)
0	1
1	1
2	5
3	39
4	411
5	5445
6	86805
7	1616895
8	34448715
9	826093485
10	22017673125
11	645633501975
12	20655688959675
13	715958472554325
14	26726481024167925
15	1068988088284491375
16	45608095005687088875
17	2067503007329827192125
18	99238033465208117605125
19	5027986481205385725402375

[1, 1, 5, 39, 411, 5445, 86805, 1616895, 34448715, 826093485, 22017673125, 645633501975, 20655688959675, 715958472554325, 26726481024167925, 1068988088284491375, 45608095005687088875, 2067503007329827192125, 99238033465208117605125, 5027986481205385725402375]

cp's OEIS Frontend

A308939 Expansion of e.g.f. 1 / (1 - Sum_{k>=1} (2k - 1)!!x^k/k!).

Table of values

List of values

cp's OEIS Frontend

A308939 Expansion of e.g.f. 1 / (1 - Sum_{k>=1} (2*k - 1)!!*x^k/k!).

Table of values

List of values

A308939 Expansion of e.g.f. 1 / (1 - Sum_{k>=1} (2k - 1)!!x^k/k!).