# A153911 (b-file synthesized from sequence entry) 0 1 1 2 2 412 3 3309 4 6170 5 28173 6 363650 7 995263 8 7017397 9 125707566 10 496907299 11 5084773943 12 131364083278 13 749724226722 14 10945594000512 15 414717014027555 16 3429998068477278 17 72977331677447737 18 3992874305065142952