# A291097 (b-file synthesized from sequence entry) 2 3 3 8 4 20 5 47 6 106 7 233 8 504 9 1079 10 2294 11 4853 12 10228 13 21491 14 45042 15 94193 16 196592 17 409583 18 851950 19 1769453 20 3669996 21 7602155 22 15728618 23 32505833 24 67108840 25 138412007 26 285212646 27 587202533 28 1207959524 29 2483027939 30 5100273634 31 10468982753 32 21474836448 33 44023414751