Terms in certain determinants.

Terms

a(0) =1a(1) =5a(2) =34a(3) =258a(4) =2136a(5) =19320a(6) =190800a(7) =2051280a(8) =23909760a(9) =300827520a(10) =4067884800a(11) =58877280000a(12) =908666035200