# A012444 (b-file synthesized from sequence entry) 0 1 1 2 2 12 3 280 4 7952 5 532768 6 30306496 7 4657640832 8 327222722816 9 131738463674880 10 2341955285781504 11 10584761954697844736 12 -1750594656814587244544 13 2213182839332047713673216