# A271945 (b-file synthesized from sequence entry) 0 0 1 0 2 4 3 4 4 40 5 72 6 428 7 1036 8 4816 9 13712 10 56020 11 174612 12 665080 13 2180568 14 7991676 15 26951708 16 96696224 17 331269920 18 1174584228 19 4059317284 20 14299305416 21 49658576744 22 174293008204 23 606920893484 24 2125899390576 25 7413894423728 26 25940068045428 27 90539218468404