Sum of digits of n!.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =6a(5) =3a(6) =9a(7) =9a(8) =9a(9) =27a(10) =27a(11) =36a(12) =27a(13) =27a(14) =45a(15) =45a(16) =63a(17) =63a(18) =54a(19) =45a(20) =54a(21) =63a(22) =72a(23) =99a(24) =81a(25) =72a(26) =81a(27) =108a(28) =90a(29) =126