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 A137314 #8 Aug 30 2014 18:57:21 %S A137314 4,28,30,54,60,70,78,94,100,108,118,126,166,196,214,238,244,268,286, %T A137314 316,324,334,348,364,406,430,438,444,478,484,508,510,516,534,550,558, %U A137314 574,604,606,628,660,670,684,708,748,790,796,820,838,846,886,924,948,966 %N A137314 Numbers n such that a type-7 Gaussian normal basis over GF(2^n) exists. %C A137314 A type-t Gaussian normal basis exists for GF(2^n) if p=n*t+1 is prime and gcd(n, (p-1)/ord(2 mod p))==1. %H A137314 Joerg Arndt, <a href="http://www.jjj.de/fxt/#fxtbook">Matters Computational (The Fxtbook)</a>, section 42.9 "Gaussian normal bases", pp.914-920 %Y A137314 Cf. A136415. %K A137314 nonn %O A137314 1,1 %A A137314 _Joerg Arndt_, Apr 05 2008