A380949 - cp's OEIS frontend

A380949 a(n) = numerator(r(n)) where r(n) = (n/2)(Pi/2)^cos(Pi(n-1))*((n/2-1/2)!/(n/2)!)^2.

n	a(n)
0	0
1	1
2	1
3	4
4	9
5	64
6	75
7	256
8	1225
9	16384
10	19845
11	65536
12	160083
13	1048576
14	1288287
15	4194304
16	41409225
17	1073741824
18	1329696225
19	4294967296
20	10667118605
21	68719476736
22	85530896451
23	274877906944
24	1371086188563
25	17592186044416
26	21972535073125
27	70368744177664
28	176021737014375

[0, 1, 1, 4, 9, 64, 75, 256, 1225, 16384, 19845, 65536, 160083, 1048576, 1288287, 4194304, 41409225, 1073741824, 1329696225, 4294967296, 10667118605, 68719476736, 85530896451, 274877906944, 1371086188563, 17592186044416, 21972535073125, 70368744177664, 176021737014375]

cp's OEIS Frontend

A380949 a(n) = numerator(r(n)) where r(n) = (n/2)(Pi/2)^cos(Pi(n-1))*((n/2-1/2)!/(n/2)!)^2.

Table of values

List of values

cp's OEIS Frontend

A380949 a(n) = numerator(r(n)) where r(n) = (n/2)*(Pi/2)^cos(Pi*(n-1))*((n/2-1/2)!/(n/2)!)^2.

Table of values

List of values

A380949 a(n) = numerator(r(n)) where r(n) = (n/2)(Pi/2)^cos(Pi(n-1))*((n/2-1/2)!/(n/2)!)^2.