A258798 - cp's OEIS frontend

A258798 a(n) = [x^n] Product_{k=1..n} (1+x^k)^3 / x^k.

n	a(n)
0	1
1	3
2	12
3	62
4	327
5	1851
6	10802
7	64440
8	391218
9	2408001
10	14989608
11	94197594
12	596756374
13	3807010920
14	24435261432
15	157681777148
16	1022391454116
17	6657413851086
18	43517229086467
19	285447137446989
20	1878287880309900
21	12395149957521672
22	82014499806039711

[1, 3, 12, 62, 327, 1851, 10802, 64440, 391218, 2408001, 14989608, 94197594, 596756374, 3807010920, 24435261432, 157681777148, 1022391454116, 6657413851086, 43517229086467, 285447137446989, 1878287880309900, 12395149957521672, 82014499806039711]

cp's OEIS Frontend

A258798 a(n) = [x^n] Product_{k=1..n} (1+x^k)^3 / x^k.

Table of values

List of values