Expansion of sinh(sin(x)^2)/2.A024258Expansion of sinh(sin(x)^2)/2.Terms a(0) =0a(1) =1a(2) =-4a(3) =76a(4) =-3424a(5) =156496a(6) =-8734144a(7) =692856256a(8) =-71625432064External referencesoeis: A024258