A218216 - cp's OEIS frontend

A218216 G.f.: Sum_{n>=0} x^n * Sum_{k=0..n} binomial(n,k)^4 * x^k*(1-x)^(n-k).

n	a(n)
0	1
1	1
2	1
3	15
4	65
5	175
6	1155
7	7229
8	31081
9	162755
10	1018195
11	5448645
12	28879019
13	171229541
14	991796825
15	5540516759
16	32232757569
17	190448140543
18	1105001828111
19	6463178610505
20	38380301015595
21	227218808375165
22	1344777832158545
23	8022879439995215
24	47988823484272835

[1, 1, 1, 15, 65, 175, 1155, 7229, 31081, 162755, 1018195, 5448645, 28879019, 171229541, 991796825, 5540516759, 32232757569, 190448140543, 1105001828111, 6463178610505, 38380301015595, 227218808375165, 1344777832158545, 8022879439995215, 47988823484272835]

cp's OEIS Frontend

A218216 G.f.: Sum_{n>=0} x^n * Sum_{k=0..n} binomial(n,k)^4 * x^k*(1-x)^(n-k).

Table of values

List of values