# A109000 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 11 4 37 5 133 6 479 7 1719 8 6121 9 21609 10 75675 11 263171 12 909899 13 3130963 14 10730891 15 36639987 16 124528283 17 420319907 18 1403656123 19 4615627555 20 14868713515 21 46702912307 22 142489152555 23 421113970835 24 1203581558011