%I A137314
%S A137314 4,28,30,54,60,70,78,94,100,108,118,126,166,196,214,238,244,268,286,316,
%T A137314 324,334,348,364,406,430,438,444,478,484,508,510,516,534,550,558,574,
%U A137314 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">fxtbook</a>
%Y A137314 Cf. A136415.
%Y A137314 Sequence in context: A038706 A153431 A043074 this_sequence A032405 A061428 
               A069518
%Y A137314 Adjacent sequences: A137311 A137312 A137313 this_sequence A137315 A137316 
               A137317
%K A137314 nonn
%O A137314 1,1
%A A137314 Joerg Arndt (arndt(AT)jjj.de), Apr 05 2008