a(n) = n!/A102356(n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =8a(6) =12a(7) =24a(8) =48a(9) =96a(10) =288a(11) =576a(12) =1152a(13) =2304a(14) =6912a(15) =13824a(16) =27648a(17) =82944a(18) =165888a(19) =497664a(20) =1327104a(21) =2985984a(22) =7962624a(23) =19906560a(24) =59719680a(25) =143327232a(26) =358318080a(27) =955514880a(28) =2866544640a(29) =7644119040