A131681 - cp's OEIS frontend

A131681 Phi(binomial(2n,n)n^2) (phi of A002736 = Apery numbers: n^2 C(2n,n). ).

n	a(n)
0	0
1	1
2	8
3	48
4	384
5	1440
6	8640
7	40320
8	184320
9	829440
10	5529600
11	18247680
12	87588864
13	474439680
14	1532805120
15	7664025600
16	32699842560
17	130288435200
18	517321728000
19	2184247296000
20	9196830720000
21	38626689024000
22	188841590784000

[0, 1, 8, 48, 384, 1440, 8640, 40320, 184320, 829440, 5529600, 18247680, 87588864, 474439680, 1532805120, 7664025600, 32699842560, 130288435200, 517321728000, 2184247296000, 9196830720000, 38626689024000, 188841590784000]

cp's OEIS Frontend

A131681 Phi(binomial(2n,n)n^2) (phi of A002736 = Apery numbers: n^2 C(2n,n). ).

Table of values

List of values

cp's OEIS Frontend

A131681 Phi(binomial(2*n,n)*n^2) (phi of A002736 = Apery numbers: n^2 C(2n,n). ).

Table of values

List of values

A131681 Phi(binomial(2n,n)n^2) (phi of A002736 = Apery numbers: n^2 C(2n,n). ).