# A068296 (b-file synthesized from sequence entry) 1 1 2 120 3 161280 4 2451486720 5 421421199390720 6 819296954885530030080 7 18013654371239090908333148160 8 4479149596637688119857975807616194560 9 12595676735919821000208123310178819903753287680 10 400570738126155220679966449710339235598075113573822617600