# A052737 (b-file synthesized from sequence entry) 0 0 1 2 2 16 3 384 4 15360 5 860160 6 61931520 7 5449973760 8 566797271040 9 68015672524800 10 9250131463372800 11 1406019982432665600 12 236211357048687820800 13 43462889696958559027200 14 8692577939391711805440000 15 1877596834908609749975040000 16 435602465698797461994209280000