# A205824 (b-file synthesized from sequence entry) 1 1 2 10 3 280 4 13860 5 1009008 6 98017920 7 11972188800 8 1766895530400 9 306261891936000 10 61040779261862400 11 13761921142674432000 12 3464298995338621440000 13 963455812901426718720000 14 293441113300834537758720000