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%I #5 Mar 30 2012 18:39:17
%S 4,5,8,1,2,11,54,3,22,117,222,19,114,87,46,207,216,61,258,291,128,591,
%T 336,43,306,423,136,519,492,97,888,951,146,537,318,163,1656,561,238,
%U 699,732,191,864,1365,286,1353,1674,229,1422,1671,802,2451,876,283,576,2577
%N a(n) is the smallest positive integer such that k=n where k is the least positive integer such that n-k and n+k are both primes.
%K nonn
%O 4,1
%A _Benoit Cloitre_, Apr 27 2003
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