# A009184 (b-file synthesized from sequence entry) 0 1 1 -1 2 2 3 -3 4 4 5 3 6 -32 7 105 8 -48 9 -1081 10 5600 11 -5643 12 -85568 13 547467 14 -533504 15 -12925983 16 85827840 17 -21466225 18 -3149702656 19 19155660141 20 27282224128 21 -1094661097965 22 5424499154944 23 26420430767577 24 -496815684169728 25 1642571602653527