A340557 - cp's OEIS frontend

A340557 a(n) = Product_{1<=j,k<=n} (4sin(Pi(4j-1)/(4n))^2 + 4sin(Pi(2k-1)/(2n))^2).

n	a(n)
0	1
1	6
2	196
3	64152
4	220581904
5	7902001927776
6	2930937179395968064
7	11225532133258005621166464
8	443461906581614469808503571611904
9	180610519352999624076350648705004622628352

[1, 6, 196, 64152, 220581904, 7902001927776, 2930937179395968064, 11225532133258005621166464, 443461906581614469808503571611904, 180610519352999624076350648705004622628352]

cp's OEIS Frontend

A340557 a(n) = Product_{1<=j,k<=n} (4sin(Pi(4j-1)/(4n))^2 + 4sin(Pi(2k-1)/(2n))^2).

Table of values

List of values

cp's OEIS Frontend

A340557 a(n) = Product_{1<=j,k<=n} (4*sin(Pi*(4*j-1)/(4*n))^2 + 4*sin(Pi*(2*k-1)/(2*n))^2).

Table of values

List of values

A340557 a(n) = Product_{1<=j,k<=n} (4sin(Pi(4j-1)/(4n))^2 + 4sin(Pi(2k-1)/(2n))^2).