# A160275 (b-file synthesized from sequence entry) 1 1 2 5 3 15 4 15 5 30 6 210 7 1050 8 6300 9 1045800 10 13756453200 11 67826316310678800 12 8622353329220210792550912000 13 92206830102396929163916671718833533307592704000