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 A167804 #5 Mar 31 2014 02:42:05 %S A167804 5,23,25,29,47,53,71,101,125,149,167,173,191,197,239,263,269,293,311, %T A167804 317,359,383,389,461,479,503,509,529,557,599,625,647,653,677,701,719, %U A167804 743,773,797,821,839,841,863,887,941,983,1031,1061,1109,1151,1223,1229 %N A167804 Numbers with primitive root -8. %H A167804 Vincenzo Librandi, <a href="/A167804/b167804.txt">Table of n, a(n) for n = 1..1000</a> %t A167804 pr=-8; Select[Range[2,2000], MultiplicativeOrder[pr,# ] == EulerPhi[ # ] &] %Y A167804 Cf. A105880 (primes with primitive root -8) %K A167804 nonn %O A167804 1,1 %A A167804 _T. D. Noe_, Nov 12 2009