# A372252 (b-file synthesized from sequence entry) 0 0 1 1 2 8 3 30 4 100 5 280 6 728 7 1764 8 4080 9 9075 10 19580 11 41184 12 84812 13 171535 14 341600 15 671160 16 1303152 17 2503896 18 4766340 19 8997450 20 16856840 21 31366181 22 58001768 23 106646400 24 195065000 25 355074525 26 643465368 27 1161281394