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Numbers n such that n^2 is not the sum of two primes.
2

%I #9 Mar 12 2015 22:21:35

%S 1,11,17,23,25,31,39,41,45,51,53,57,59,65,67,73,79,81,83,85,87,91,95,

%T 97,99,101,105,109,111,113,115,123,125,129,133,137,141,143,147,149,

%U 151,153,157,159,163,165,167,171,175,179,181,185,187,189,193,195,197,199,201

%N Numbers n such that n^2 is not the sum of two primes.

%F a(n) = SQRT(A106562(n)).

%e a(3)=17 because the third square which is not the sum of two primes (289=17^2) is the 17th one in the succession of the perfect squares (thus: index 17).

%Y Cf. A106544-A106548, A106562-A106564, A106571, A106573-A106575, A106577.

%K nonn

%O 1,2

%A _Alexandre Wajnberg_, May 09 2005

%E Extended by _Ray Chandler_, May 12 2005