a(n) = (2*n)^n+(2*n+1)^n-(2*n+2)^n.
A127696
a(n) = (2*n)^n+(2*n+1)^n-(2*n+2)^n.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =47a(4) =657a(5) =12219a(6) =283257a(7) =7837423a(8) =250764161a(9) =9046988147a(10) =359958186777
External references
- oeis: A127696
A127696
a(n) = (2*n)^n+(2*n+1)^n-(2*n+2)^n.