This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A138318 #3 Mar 30 2012 17:22:47 %S A138318 2,6,14,26,38,206,332,530,8000,32768,85184,125000,175616 %N A138318 Even nonsquares not representable as p+g, where p is a prime and g is a prime primitive root of p. %C A138318 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 A138318 Cf. A138305 (prime primitive roots). %K A138318 nonn %O A138318 1,1 %A A138318 _T. D. Noe_, Mar 14 2008