a(1) = 1, a(n) = digit reversal of n*a(n-1).

Terms

a(0) =1a(1) =2a(2) =6a(3) =42a(4) =12a(5) =27a(6) =981a(7) =8487a(8) =38367a(9) =76383a(10) =312048a(11) =6754473a(12) =94180878a(13) =2922358131a(14) =56917353834a(15) =443166776019