Quartic product sequence: a(n) = Product_{k=1..(n-1)/2} (1 + m*cos(k*Pi/n)^2 + q*cos(k*Pi/n)^4), with m=12 and q = 3*4^3.
A152096
Quartic product sequence: a(n) = Product_{k=1..(n-1)/2} (1 + m*cos(k*Pi/n)^2 + q*cos(k*Pi/n)^4), with m=12 and q = 3*4^3.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =16a(4) =55a(5) =355a(6) =1888a(7) =9829a(8) =57145a(9) =294064a(10) =1683055a(11) =8893147a(12) =49635520a(13) =267601933a(14) =1472118817a(15) =8012384080a(16) =43823300455a(17) =239288418067
External references
- oeis: A152096