# A148099 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 10 5 26 6 76 7 223 8 702 9 2214 10 7304 11 24164 12 82489 13 282164 14 987881 15 3463409 16 12359141 17 44151318 18 159911910 19 579698430 20 2124693327 21 7792875067 22 28839353888 23 106787736502 24 398354778453 25 1486699269986 26 5582988776700 27 20973971137343 28 79208990291815 29 299233839402802 30 1135531152080614 31 4310296717819132