A340139 - cp's OEIS frontend

A340139 a(n) = 4^((n-2)(n-1)) Product_{1<=i sin(iPi/(2n))^2 * sin(jPi/(2n))^2).

n	a(n)
1	1
2	1
3	13
4	1904
5	3016365
6	50771120400
7	8993476465721657
8	16670531837245286776832
9	322175275214070402711647486361
10	64754609334534873770923002355900227840

[1, 1, 13, 1904, 3016365, 50771120400, 8993476465721657, 16670531837245286776832, 322175275214070402711647486361, 64754609334534873770923002355900227840]

cp's OEIS Frontend

A340139 a(n) = 4^((n-2)(n-1)) Product_{1<=i sin(iPi/(2n))^2 * sin(jPi/(2n))^2).

Table of values

List of values

cp's OEIS Frontend

A340139 a(n) = 4^((n-2)*(n-1)) * Product_{1<=i sin(i*Pi/(2*n))^2 * sin(j*Pi/(2*n))^2).

Table of values

List of values

A340139 a(n) = 4^((n-2)(n-1)) Product_{1<=i sin(iPi/(2n))^2 * sin(jPi/(2n))^2).