a(n) = n^n + (n-1)^(n-1).

A056788

a(n) = n^n + (n-1)^(n-1).

Terms

    a(0) =2a(1) =5a(2) =31a(3) =283a(4) =3381a(5) =49781a(6) =870199a(7) =17600759a(8) =404197705a(9) =10387420489a(10) =295311670611

External references