A183146 - cp's OEIS frontend

A183146 G.f.: Sum_{n>=0} [Sum_{k=0..n} C(n,k)^2x^k]^3 x^n.

n	a(n)
0	1
1	1
2	4
3	16
4	80
5	407
6	2221
7	12380
8	71196
9	417016
10	2484839
11	15001779
12	91603298
13	564661194
14	3509278042
15	21964437947
16	138330334357
17	875977578584
18	5574225259696
19	35626247068500
20	228592067446715
21	1471959684881231

[1, 1, 4, 16, 80, 407, 2221, 12380, 71196, 417016, 2484839, 15001779, 91603298, 564661194, 3509278042, 21964437947, 138330334357, 875977578584, 5574225259696, 35626247068500, 228592067446715, 1471959684881231]

cp's OEIS Frontend

A183146 G.f.: Sum_{n>=0} [Sum_{k=0..n} C(n,k)^2x^k]^3 x^n.

Table of values

List of values

cp's OEIS Frontend

A183146 G.f.: Sum_{n>=0} [Sum_{k=0..n} C(n,k)^2*x^k]^3 * x^n.

Table of values

List of values

A183146 G.f.: Sum_{n>=0} [Sum_{k=0..n} C(n,k)^2x^k]^3 x^n.