# A151031 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 29 4 105 5 401 6 1549 7 6117 8 24863 9 102513 10 425667 11 1788859 12 7605783 13 32534495 14 139913313 15 606044139 16 2640192189 17 11543795319 18 50681045899 19 223505643799 20 988925201653 21 4387436074431 22 19525621840481 23 87147777000535 24 389827684213269 25 1747541447885141 26 7852036948376335 27 35350863691511405