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%I #5 Dec 05 2013 19:56:31
%S 11,0,13,23,0,43,17,0,19,29,0,67,59,0,79,89,0,109,137,0,139,149,0,223,
%T 179,0,127,227,0,229,131,0,277,233,0,307,137,0,139,239,0,241,359,0,
%U 379,389,0,409,149,0,151,251,0,487,353,0,157,257,0,457,359,0,163,263,0,463
%N a(n) = smallest prime that is the concatenation of two numbers whose sum is n.
%C a(3k) = 0. Conjecture: No other term is zero.
%e a(10) = 19, the Partitions of 10 are (1,9), (2,8), 3,7), (4,6), (5,5) and the primes obtained are 19,37 and 73.
%Y Cf. A087555.
%K base,nonn
%O 2,1
%A _Amarnath Murthy_, Sep 13 2003
%E More terms from _David Wasserman_, Jun 07 2005
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