# A148015 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 8 5 17 6 46 7 110 8 335 9 932 10 2810 11 7952 12 24816 13 77649 14 246474 15 775403 16 2494697 17 8205868 18 27285758 19 89808549 20 299916394 21 1015055715 22 3470516713 23 11875011937 24 40535085083 25 140299654185 26 489869705096 27 1712127093499 28 5997291296577 29 21043269839009 30 74602647699984 31 265584478448207 32 944077259383298