a(n) = n^(n+1) - (n-1)^n.A084363a(n) = n^(n+1) - (n-1)^n.Terms a(0) =1a(1) =7a(2) =73a(3) =943a(4) =14601a(5) =264311a(6) =5484865a(7) =128452927a(8) =3352566673a(9) =96513215599External referencesoeis: A084363