A380950 - cp's OEIS frontend

A380950 a(n) = denominator(r(n)) where r(n) = (n/2)(Pi/2)^cos(Pi(n-1))*((n/2-1/2)!/(n/2)!)^2.

n	a(n)
0	1
1	1
2	2
3	3
4	16
5	45
6	128
7	175
8	2048
9	11025
10	32768
11	43659
12	262144
13	693693
14	2097152
15	2760615
16	67108864
17	703956825
18	2147483648
19	2807136475
20	17179869184
21	44801898141
22	137438953472
23	178837328943
24	2199023255552
25	11425718238025
26	35184372088832
27	45635265151875
28	281474976710656

[1, 1, 2, 3, 16, 45, 128, 175, 2048, 11025, 32768, 43659, 262144, 693693, 2097152, 2760615, 67108864, 703956825, 2147483648, 2807136475, 17179869184, 44801898141, 137438953472, 178837328943, 2199023255552, 11425718238025, 35184372088832, 45635265151875, 281474976710656]

cp's OEIS Frontend

A380950 a(n) = denominator(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

A380950 a(n) = denominator(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

A380950 a(n) = denominator(r(n)) where r(n) = (n/2)(Pi/2)^cos(Pi(n-1))*((n/2-1/2)!/(n/2)!)^2.