a(n) = (n+3)^n - (3^n + 4^n + ... + (n+2)^n).
A217534
a(n) = (n+3)^n - (3^n + 4^n + ... + (n+2)^n).
Terms
- a(0) =0a(1) =0a(2) =143a(3) =3793a(4) =84542a(5) =1919704a(6) =46627805a(7) =1227528189a(8) =35089362124
External references
- oeis: A217534
A217534
a(n) = (n+3)^n - (3^n + 4^n + ... + (n+2)^n).