# A268149 (b-file synthesized from sequence entry) 0 0 1 24 2 1120 3 33264 4 823680 5 18475600 6 389398464 7 7862853600 8 153876579840 9 2940343837200 10 55138611528000 11 1018383898440480 12 18574619721465600 13 335240928272918304 14 5996573430996184960 15 106438123408375281600 16 1876607120325212706816 17 32891715945378106711440