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%I
%S 2,5,11,11,31,29,31,61,59,31,127,233,61,127,101,61,223,233,139,277,
%T 311,149,613,359,227,331,449,163,547,521,251,919,983,179,571,353,563,
%U 1693,599,277,739,773,307,907,1409,331,1399,1721,389,1471,1721,853,2503,929
%N Least prime p such that p - 2n is prime, but not both p-2k and p-2(n-k) are prime for 0<k<n.
%C Does a(n) exist for all n? It appears that a(3n) is less than a(3n-1) and a(3n+1) for all n except 1, 2 and 12.
%H T. D. Noe, <a href="/A155767/b155767.txt">Table of n, a(n) for n=0..2000</a>
%F a(n) = A103147(n) + n = A155766(n) + 2n.
%K nonn
%O 0,1
%A _T. D. Noe_, Jan 27 2009
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