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%I #5 Dec 05 2013 19:56:20
%S 0,3,7,489,21,7,3,62991,660121,6,21,4,21,1,17,4502443050081,9,27,9,12,
%T 39,3,3,57,8887056427569,17,20039676975717396967,156,23,5,291,
%U 240000720001080000810000243,5,33,6,8400000000000000049,3,9,11
%N a(n) = (smallest n-digit number beginning with n and having prime signature of n)- (smallest n-digit number beginning with n).
%F a(n) = A086558(n) - n*10^(n-d), where d = the number of digits in n.
%e a(4) = 4489 -4000=489.
%Y Cf. A086558.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_, Aug 30 2003
%E More terms from _Sascha Kurz_, Sep 22 2003