%I #3 Oct 15 2013 22:32:12
%S 2,4,52,61,43,49,29,8,223,53,83,59,25,568,47,221,229,1286,427,629,637,
%T 46,109,652,458,925,1438,86,674,535
%N a(n) is the least number such that the minimal exponent for which rev[a(n)^n]=prime holds is n. Thus rev[a(n)^k] is composite for k=1,..n.
%e n=10, a(10)=53: This means that rev[53^10]=940315563074788471 is prime, but rev[53^k] is composite for k=1,...,9. Also, rev[a^10] for a<a(n)=53 is not prime. However a>53 is possible like e.g rev[103^10] is prime; 10 as the least exponent belongs to several bases of which a(10)=53 is the smallest one.
%Y Cf. A085324.
%K base,nonn
%O 1,1
%A _Labos Elemer_, Jul 02 2003
