Imaginary part of Product_{k=1..n} (k+(n-k+1)i), with i=sqrt(-1).
A302662
Imaginary part of Product_{k=1..n} (k+(n-k+1)i), with i=sqrt(-1).
Terms
- a(0) =0a(1) =1a(2) =5a(3) =20a(4) =0a(5) =-1560a(6) =-26825a(7) =-272000a(8) =0a(9) =84086080a(10) =2484885325a(11) =40560998400a(12) =0a(16) =0a(20) =0
External references
- oeis: A302662