A217615 - cp's OEIS frontend

A217615 G.f.: Sum_{n>=0} x^n * Sum_{k=0..n} binomial(n,k)^2 * x^k*(1-x)^(n-k).

n	a(n)
0	1
1	1
2	1
3	3
4	5
5	7
6	15
7	29
8	49
9	95
10	187
11	345
12	659
13	1289
14	2465
15	4739
16	9237
17	17911
18	34715
19	67705
20	132063
21	257477
22	503309
23	984983
24	1927895
25	3778017
26	7411237
27	14544967
28	28565661
29	56144615
30	110406527
31	217225533
32	427636561
33	842256047
34	1659600955
35	3271579689
36	6451913519

[1, 1, 1, 3, 5, 7, 15, 29, 49, 95, 187, 345, 659, 1289, 2465, 4739, 9237, 17911, 34715, 67705, 132063, 257477, 503309, 984983, 1927895, 3778017, 7411237, 14544967, 28565661, 56144615, 110406527, 217225533, 427636561, 842256047, 1659600955, 3271579689, 6451913519]

cp's OEIS Frontend

A217615 G.f.: Sum_{n>=0} x^n * Sum_{k=0..n} binomial(n,k)^2 * x^k*(1-x)^(n-k).

Table of values

List of values