%I #5 Mar 31 2012 13:22:06
%S 1,1,1,1,1,1,1,1,1,1,4,1,2,1,1,1,4,1,1,1,3,5,2,1,1,3,2,2,2,9,6,1,6,4,
%T 1,1,4,1,2,2,3,6,6,5,1,5,5,1,2,1,10,3,5,1,3,2,1,4,5,2,2,3,1,1,2,3,5,5,
%U 6,1,12,3,5,6,1,2,9,3,4,1,1,5,2,3,4,7,2,2,16,8,5,1,5,5,6,3,2,11,2,2
%N Least k(n) such that k(n)*m^n*(m^n-1)+j is prime with j= -1 or 1 or both and 1<m<10
%C when n increases sum k(n) for i=1 to n / sum n for i=1 to n tends to 0.05, 0<k(n)<0.5*n
%H Pierre CAMI, <a href="/A153094/b153094.txt">Table of n, a(n) for n = 1..1000</a>
%e 1*2^1*(2^1-1)+1=3 prime so k(1)=1
%Y A152414, A152090, A152091, A152092, A152093, A152095
%K nonn
%O 1,11
%A _Pierre CAMI_, Dec 18 2008