Sum of odd divisors of !n.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =13a(5) =12a(6) =324a(7) =1352a(8) =18368a(9) =19152a(10) =1994322a(11) =8810748a(12) =193690826a(13) =829046868a(14) =34563283272a(15) =274895151856