# A116770 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 21 5 73 6 234 7 691 8 1910 9 5019 10 12690 11 31147 12 74694 13 175843 14 407810 15 934179 16 2117958 17 4759915 18 10617234 19 23527867 20 51839462 21 113639955 22 247988802 23 538968691 24 1167065766 25 2518680283 26 5419041554 27 11626611531 28 24880612230