# A117160 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 4 5 9 6 19 7 43 8 94 9 210 10 464 11 1035 12 2295 13 5111 14 11352 15 25259 16 56145 17 124888 18 277669 19 617554 20 1373201 21 3053883 22 6790995 23 15102178 24 33583784 25 74684504 26 166082706 27 369337117 28 821331578 29 1826484804 30 4061741926 31 9032530513