a(n) = n^(n+2)*(n^2 - 1)*(n+3)*(n+2)*(5*n - 7)/5760.
A060349
a(n) = n^(n+2)*(n^2 - 1)*(n+3)*(n+2)*(5*n - 7)/5760.
Terms
- a(0) =81a(1) =5824a(2) =328125a(3) =16901136a(4) =847425747a(5) =42630905856
External references
- oeis: A060349
A060349
a(n) = n^(n+2)*(n^2 - 1)*(n+3)*(n+2)*(5*n - 7)/5760.