a(0)=1; thereafter a(n) = n*a(n-1) if n is even, otherwise a(n) = 2*n*a(n-1).
A232205
a(0)=1; thereafter a(n) = n*a(n-1) if n is even, otherwise a(n) = 2*n*a(n-1).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =24a(4) =96a(5) =960a(6) =5760a(7) =80640a(8) =645120a(9) =11612160a(10) =116121600a(11) =2554675200a(12) =30656102400a(13) =797058662400
External references
- oeis: A232205