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%I #4 Mar 31 2012 14:11:37
%S 2,3,4,6,8,9,10,12,14,15,16,18,20,21,22,24,26,28,30,32,33,34,36,38,40,
%T 42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,
%U 88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,117,118,120,122
%N Indices n of perfect squares n^2 which are both the sum and the difference of two primes.
%F a(n) = SQRT(A106575(n)).
%e a(3)=4 because the third square which is the sum and the difference of two primes (16=4^2) is the 4th one in
%e the succession of the perfect squares (thus: index 4).
%Y Cf. A106544-A106548, A106562-A106564, A106571, A106573-A106575.
%K easy,nonn
%O 1,1
%A _Alexandre Wajnberg_, May 09 2005
%E Extended by _Ray Chandler_, May 12 2005
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