a(n) = 6*(n - 3)*(n - 4)*2^(n-3)*n^(n-4).
A232994
a(n) = 6*(n - 3)*(n - 4)*2^(n-3)*n^(n-4).
Terms
- a(0) =0a(1) =0a(2) =240a(3) =10368a(4) =395136a(5) =15728640a(6) =680244480a(7) =32256000000
External references
- oeis: A232994
A232994
a(n) = 6*(n - 3)*(n - 4)*2^(n-3)*n^(n-4).