a(n) = sqrt( Product_{j=1..n} Product_{k=1..4} (4*sin((2*j-1)*Pi/(2*n))^2 + 4*sin((2*k-1)*Pi/4)^2) ).
A341544
a(n) = sqrt( Product_{j=1..n} Product_{k=1..4} (4*sin((2*j-1)*Pi/(2*n))^2 + 4*sin((2*k-1)*Pi/4)^2) ).
Terms
- a(0) =36a(1) =256a(2) =2916a(3) =38416a(4) =527076a(5) =7311616a(6) =101727396a(7) =1416468496a(8) =19727326116a(9) =274760478976
External references
- oeis: A341544