A305404 - cp's OEIS frontend

A305404 Expansion of Sum_{k>=0} (2k - 1)!!x^k/Product_{j=1..k} (1 - j*x).

n	a(n)
0	1
1	1
2	4
3	25
4	217
5	2416
6	32839
7	527185
8	9761602
9	204800551
10	4801461049
11	124402647370
12	3529848676237
13	108859319101261
14	3625569585663484
15	129689000146431205
16	4958830249864725997
17	201834650901695603296
18	8712774828941647677019
19	397596632650906687905565

[1, 1, 4, 25, 217, 2416, 32839, 527185, 9761602, 204800551, 4801461049, 124402647370, 3529848676237, 108859319101261, 3625569585663484, 129689000146431205, 4958830249864725997, 201834650901695603296, 8712774828941647677019, 397596632650906687905565]

cp's OEIS Frontend

A305404 Expansion of Sum_{k>=0} (2k - 1)!!x^k/Product_{j=1..k} (1 - j*x).

Table of values

List of values

cp's OEIS Frontend

A305404 Expansion of Sum_{k>=0} (2*k - 1)!!*x^k/Product_{j=1..k} (1 - j*x).

Table of values

List of values

A305404 Expansion of Sum_{k>=0} (2k - 1)!!x^k/Product_{j=1..k} (1 - j*x).