# A100561 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 12 5 10 6 60 7 105 8 140 9 63 10 280 11 1155 12 27720 13 25740 14 8008 15 9009 16 16380 17 17017 18 6126120 19 2909907 20 5542680 21 2645370 22 232792560 23 111546435 24 535422888 25 128707425 26 2974571600 27 717084225 28 80313433200 29 77636318760 30 2329089562800 31 4512611027925 32 546983154900