Number of binary digits in (n!)!.

Terms

a(0) =1a(1) =1a(2) =2a(3) =10a(4) =80a(5) =661a(6) =5802a(7) =54725a(8) =558704a(9) =6178565a(10) =73840164a(11) =950331113a(12) =13121175977a(13) =193618002604