# A149086 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 7 4 30 5 69 6 305 7 821 8 3706 9 10951 10 50167 11 157879 12 731126 13 2409735 14 11251900 15 38416059 16 180553280 17 633903339 18 2995076713 19 10757081251 20 51047312394 21 186835993771 22 889875336356 23 3309417001979 24 15811570006020 25 59613630920579 26 285586423605813 27 1089612947988583 28 5232179206138834