A307496 - cp's OEIS frontend

A307496 Expansion of Product_{k>=1} (1 + ((1 - sqrt(1 - 4*x))/2)^k).

n	a(n)
0	1
1	1
2	2
3	6
4	18
5	57
6	187
7	629
8	2156
9	7502
10	26427
11	94053
12	337653
13	1221260
14	4445892
15	16277089
16	59893052
17	221370725
18	821499759
19	3059620076
20	11432831745
21	42848889316
22	161032785057
23	606710026659
24	2291156662259
25	8670805904186
26	32879697168622
27	124910667052026
28	475357627716839
29	1811931609379926

[1, 1, 2, 6, 18, 57, 187, 629, 2156, 7502, 26427, 94053, 337653, 1221260, 4445892, 16277089, 59893052, 221370725, 821499759, 3059620076, 11432831745, 42848889316, 161032785057, 606710026659, 2291156662259, 8670805904186, 32879697168622, 124910667052026, 475357627716839, 1811931609379926]

cp's OEIS Frontend

A307496 Expansion of Product_{k>=1} (1 + ((1 - sqrt(1 - 4*x))/2)^k).

Table of values

List of values