# A193831 (b-file synthesized from sequence entry) 1 3 2 7 3 15 4 101 5 297 6 1255 7 4565 8 21637 9 44583 10 63261 11 329931 12 1121505 13 2679689 14 4697205 15 6185689 16 23338469 17 49995925 18 431149389 19 3913864295 20 13610949895 21 80630964769 22 362326859895 23 749474411781 24 2168627105469 25 3646072432125 26 10085065885767 27 27152408925615