A248053 - cp's OEIS frontend

A248053 G.f.: Sum_{n>=0} x^n / (1-4x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].

n	a(n)
0	1
1	5
2	35
3	285
4	2519
5	23545
6	228715
7	2284365
8	23294551
9	241366025
10	2532599675
11	26845322925
12	286946021495
13	3088651368025
14	33443864305675
15	363983410742925
16	3979005075583255
17	43667580737050025
18	480884378835323675
19	5311978947724802925
20	58839469859529979319
21	653372409529941364345

[1, 5, 35, 285, 2519, 23545, 228715, 2284365, 23294551, 241366025, 2532599675, 26845322925, 286946021495, 3088651368025, 33443864305675, 363983410742925, 3979005075583255, 43667580737050025, 480884378835323675, 5311978947724802925, 58839469859529979319, 653372409529941364345]

cp's OEIS Frontend

A248053 G.f.: Sum_{n>=0} x^n / (1-4x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].

Table of values

List of values

cp's OEIS Frontend

A248053 G.f.: Sum_{n>=0} x^n / (1-4*x)^(2*n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].

Table of values

List of values

A248053 G.f.: Sum_{n>=0} x^n / (1-4x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * 2^k * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].