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%I #3 Mar 30 2012 17:22:47
%S 2,6,14,26,38,206,332,530,8000,32768,85184,125000,175616
%N Even nonsquares not representable as p+g, where p is a prime and g is a prime primitive root of p.
%C This is a subsequence of A138307. Terms starting with a(9) are cubes: 20^3, 32^3, 44^3, 50^3 and 56^3.
%Y Cf. A138305 (prime primitive roots).
%K nonn
%O 1,1
%A _T. D. Noe_, Mar 14 2008
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