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%I #11 Aug 09 2015 23:54:36
%S 3,4,3,4,4,3,4,3,5,5,3,4,3,4,4,3,8,4,3,7,3,4,5,3,4,4,3,5,4,3,5,3,4,7,
%T 3,4,4,3,7,4,3,5,3,4,5,3,4,4,3,5,4,3,9,7,3,4,3,4,4,3,7,4,3,5,5,3,4,7,
%U 3,4,4,3,4,3,9,8,3,4,5,3,4,4,3,5,4,3,7,5,3,4,3,4,4,3,9,4,3,5,8,3,4,5,3,4,4
%N Smallest positive integer k such that A000037(n) is not a quadratic residue modulo k.
%C The nonzero terms of A139401.
%F a(n) = A139401(A000037(n)).
%e a(1) = 3 because the first nonsquare positive integer is 2 and 2 is not a quadratic residue modulo 3.
%K nonn
%O 1,1
%A Guilherme de Queiroz Hobbs (guilhermehobbs(AT)uol.com.br), Jan 08 2005
%E Corrected and extended by _David Wasserman_, Mar 04 2008
%E Edited by _Max Alekseyev_, May 11 2010
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