# A145546 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 4 5 9 6 20 7 48 8 115 9 286 10 718 11 1838 12 4750 13 12431 14 32790 15 87225 16 233534 17 629123 18 1703586 19 4635181 20 12664335 21 34734322 22 95592704 23 263909594