# A076638 (b-file synthesized from sequence entry) 1 12 2 20 3 2520 4 27720 5 720720 6 4084080 7 5173168 8 80313433200 9 2329089562800 10 13127595717600 11 485721041551200 12 2844937529085600 13 1345655451257488800 14 3099044504245996706400 15 54749786241679275146400 16 3230237388259077233637600