Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = sqrt( Product_{a=1..n-1} Product_{b=1..k-1} (4*sin(a*Pi/n)^2 + 4*cos(b*Pi/k)^2) ).

A340561

Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = sqrt( Product_{a=1..n-1} Product_{b=1..k-1} (4*sin(a*Pi/n)^2 + 4*cos(b*Pi/k)^2) ).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =3a(9) =1a(10) =1a(11) =12a(12) =16a(13) =4a(14) =1a(15) =1a(16) =29a(17) =75a(18) =45a(19) =5a(20) =1a(21) =1a(22) =70a(23) =361a(24) =384a(25) =121a(26) =6a(27) =1a(28) =1a(29) =169

External references