Expansion of log(1 + sin(x)^2).A009344Expansion of log(1 + sin(x)^2).Terms a(0) =0a(1) =2a(2) =-20a(3) =512a(4) =-27680a(5) =2565632a(6) =-363299840a(7) =72957489152External referencesoeis: A009344