# A149122 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 9 4 34 5 94 6 368 7 1131 8 4466 9 14468 10 57356 11 193200 12 767664 13 2650814 14 10552660 15 37141229 16 148040634 17 528844796 18 2109494072 19 7623040680 20 30426290940 21 110998813606 22 443245452212 23 1629794707352 24 6510278089072 25 24096191513060 26 96278729708172 27 358370832690704 28 1432209340089340 29 5357082370310378