%I #5 Mar 28 2024 21:54:38
%S 1,5,43,469,6221,98041,1797559,37665881,888888889,23343682141,
%T 675462155171,21356578028941,732659790696133,27107717023577009,
%U 1076060070966390511,45619867383437689201,2057328526812890853617
%N First superdiagonal of number array A083064.
%F a(n) = ((n-1)*(n+1)^n + 1)/n.
%Y Cf. A083069, A083071.
%K easy,nonn
%O 1,2
%A _Paul Barry_, Apr 21 2003