A248055 - cp's OEIS frontend

A248055 G.f.: Sum_{n>=0} x^n / (1-4x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].

n	a(n)
0	1
1	5
2	34
3	265
4	2219
5	19490
6	177119
7	1651405
8	15707416
9	151791375
10	1485814989
11	14697965770
12	146673432721
13	1474490991635
14	14915914368896
15	151701887367585
16	1550083118902041
17	15903333300738320
18	163749905809635219
19	1691449817705302875
20	17521670544878571584
21	181972459046153912945

[1, 5, 34, 265, 2219, 19490, 177119, 1651405, 15707416, 151791375, 1485814989, 14697965770, 146673432721, 1474490991635, 14915914368896, 151701887367585, 1550083118902041, 15903333300738320, 163749905809635219, 1691449817705302875, 17521670544878571584, 181972459046153912945]

cp's OEIS Frontend

A248055 G.f.: Sum_{n>=0} x^n / (1-4x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].

Table of values

List of values

cp's OEIS Frontend

A248055 G.f.: Sum_{n>=0} x^n / (1-4*x)^(2*n+1) * [Sum_{k=0..n} C(n,k)^2 * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].

Table of values

List of values

A248055 G.f.: Sum_{n>=0} x^n / (1-4x)^(2n+1) * [Sum_{k=0..n} C(n,k)^2 * x^k] * [Sum_{k=0..n} C(n,k)^2 * 4^k * x^k].