# A340911 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 6 4 16 5 52 6 189 7 740 8 3067 9 13330 10 60366 11 283504 12 1376000 13 6884364 14 35440060 15 187471028 16 1018049493 17 5671511886 18 32396788157 19 189673021414 20 1137795705447 21 6991058047594 22 43984892028735 23 283267507353084 24 1866622184589906