Primitive terms of A363063.

Terms

a(0) =2a(1) =12a(2) =720a(3) =864a(4) =4320a(5) =21600a(6) =62208a(7) =151200a(8) =311040a(9) =1555200a(10) =7776000a(11) =10886400a(12) =54432000a(13) =381024000a(14) =4191264000a(15) =160030080000a(16) =251475840000