# A097815 (b-file synthesized from sequence entry) 0 1 1 8 2 80 3 1024 4 16640 5 333824 6 8015872 7 224460800 8 7182811136 9 258581463040 10 10343259570176 11 455103425282048 12 21844964430315520 13 1135938150443515904 14 63612536425105326080 15 3816752185507393306624 16 244272139872477466591232