A246056 - cp's OEIS frontend

A246056 G.f.: Sum_{n>=0} x^n / (1-2x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 3^k * x^k].

n	a(n)
0	1
1	3
2	16
3	99
4	681
5	4950
6	37303
7	288399
8	2272318
9	18167553
10	146950227
11	1199921310
12	9875193549
13	81811617237
14	681621711306
15	5706874227051
16	47985527200311
17	405002888376840
18	3429714479025247
19	29130993220171449
20	248095567594494634
21	2118053534177686959
22	18122259456592141785

[1, 3, 16, 99, 681, 4950, 37303, 288399, 2272318, 18167553, 146950227, 1199921310, 9875193549, 81811617237, 681621711306, 5706874227051, 47985527200311, 405002888376840, 3429714479025247, 29130993220171449, 248095567594494634, 2118053534177686959, 18122259456592141785]

cp's OEIS Frontend

A246056 G.f.: Sum_{n>=0} x^n / (1-2x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 3^k * x^k].

Table of values

List of values

cp's OEIS Frontend

A246056 G.f.: Sum_{n>=0} x^n / (1-2*x)^(2*n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 3^k * x^k].

Table of values

List of values

A246056 G.f.: Sum_{n>=0} x^n / (1-2x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 3^k * x^k].