# A229702 (b-file synthesized from sequence entry) 0 1 1 10 2 70 3 440 4 2675 5 16106 6 96720 7 580440 8 3482805 9 20897050 10 125382586 11 752295880 12 4513775735 13 27082654970 14 162495930500 15 974975583816 16 5849853503865 17 35099121024330 18 210594726147310 19 1263568356885400 20 7581410141314171