a(n)=(-1)^((n-2)*(n-1)/2)*2^((n-1)^2)*n^(n-3).
A317450
a(n)=(-1)^((n-2)*(n-1)/2)*2^((n-1)^2)*n^(n-3).
Terms
- a(0) =1a(1) =1a(2) =-16a(3) =-2048a(4) =1638400a(5) =7247757312
External references
- oeis: A317450
A317450
a(n)=(-1)^((n-2)*(n-1)/2)*2^((n-1)^2)*n^(n-3).