# A271389 (b-file synthesized from sequence entry) 0 0 1 1 2 6 3 22 4 66 5 179 6 460 7 1148 8 2820 9 6869 10 16658 11 40306 12 97414 13 235303 14 568216 15 1371960 16 3312392 17 7997033 18 19306782 19 46610958 20 112529098 21 271669595 22 655868772 23 1583407668 24 3822684684 25 9228777661 26 22280240682 27 53789259754 28 129858760974 29 313506782543 30 756872326960