# A353196 (b-file synthesized from sequence entry) 1 6 2 60 3 1080 4 36720 5 2423520 6 315057600 7 81284860800 8 41780418451200 9 42866709330931200 10 87876754128408960000 11 360118938418219918080000 12 2950814581398894008747520000 13 48352047730802277227336862720000