A358387 - cp's OEIS frontend

A358387 a(n) = 3 * h(n - 1) * h(n) for n >= 1, where h(n) = hypergeom([-n, -n], [1], 2), and a(0) = 1.

n	a(n)
0	1
1	9
2	117
3	2457
4	60669
5	1620729
6	45385461
7	1311647913
8	38774378493
9	1165936210281
10	35529105456117
11	1094291069720121
12	34000718751227133
13	1064200845293945433
14	33516300131277352821
15	1061218377653812515657
16	33757038339556757274621
17	1078167326486278065165513

[1, 9, 117, 2457, 60669, 1620729, 45385461, 1311647913, 38774378493, 1165936210281, 35529105456117, 1094291069720121, 34000718751227133, 1064200845293945433, 33516300131277352821, 1061218377653812515657, 33757038339556757274621, 1078167326486278065165513]

cp's OEIS Frontend

A358387 a(n) = 3 * h(n - 1) * h(n) for n >= 1, where h(n) = hypergeom([-n, -n], [1], 2), and a(0) = 1.

Table of values

List of values