A128085 - cp's OEIS frontend

A128085 Central coefficients of q in the q-analog of the even double factorials: a(n) = [q^([n^2/2])] Product_{j=1..n} (1-q^(2j))/(1-q).

n	a(n)
0	1
1	1
2	2
3	8
4	46
5	340
6	3210
7	36336
8	484636
9	7394458
10	127707302
11	2454109404
12	52091631896
13	1207854671388
14	30431260261770
15	826657521349952
16	24114046688034516
17	751085176539860458
18	24899882719111953556

[1, 1, 2, 8, 46, 340, 3210, 36336, 484636, 7394458, 127707302, 2454109404, 52091631896, 1207854671388, 30431260261770, 826657521349952, 24114046688034516, 751085176539860458, 24899882719111953556]

cp's OEIS Frontend

A128085 Central coefficients of q in the q-analog of the even double factorials: a(n) = [q^([n^2/2])] Product_{j=1..n} (1-q^(2j))/(1-q).

Table of values

List of values