Expansion of sin(sin(x)*cos(x)).A009481Expansion of sin(sin(x)*cos(x)).Terms a(0) =1a(1) =-5a(2) =57a(3) =-1661a(4) =68529a(5) =-3570613a(6) =247557481a(7) =-22399292077External referencesoeis: A009481