A128593 - cp's OEIS frontend

A128593 Column 1 of triangle A128592; a(n) = coefficient of q^(n+2) in the q-analog of the odd double factorials (2n+3)!! for n>=0.

n	a(n)
0	1
1	3
2	12
3	45
4	170
5	644
6	2451
7	9365
8	35908
9	138104
10	532589
11	2058782
12	7975216
13	30951921
14	120326060
15	468473348
16	1826415556
17	7129330988
18	27860219331
19	108984557708
20	426730087879
21	1672310507262
22	6558840830680
23	25742937514814
24	101108341344396
25	397368218111003

[1, 3, 12, 45, 170, 644, 2451, 9365, 35908, 138104, 532589, 2058782, 7975216, 30951921, 120326060, 468473348, 1826415556, 7129330988, 27860219331, 108984557708, 426730087879, 1672310507262, 6558840830680, 25742937514814, 101108341344396, 397368218111003]

cp's OEIS Frontend

A128593 Column 1 of triangle A128592; a(n) = coefficient of q^(n+2) in the q-analog of the odd double factorials (2n+3)!! for n>=0.

Table of values

List of values