a(n)=(-1)^((n-2)*(n-1)/2)*2^(n-1)*n^(n-3).
A317403
a(n)=(-1)^((n-2)*(n-1)/2)*2^(n-1)*n^(n-3).
Terms
- a(0) =1a(1) =1a(2) =-4a(3) =-32a(4) =400a(5) =6912a(6) =-153664a(7) =-4194304a(8) =136048896a(9) =5120000000a(10) =-219503494144
External references
- oeis: A317403