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 A127437 #20 Mar 08 2021 02:17:51 %S A127437 2,5,11,13,19,23,29,37,47,53,59,61,67,71,83,97,101,107,131,139,149, %T A127437 163,167,173,179,181,191,193,197,211,227,239,263,269,293,307,311,313, %U A127437 317,347,349,359,373,379,383,389,409,419,421,431,443,461,467,479,491,499,503,509,523,541,547,557,563,577 %N A127437 Duplicate of A001915. %C A127437 Potential prime divisors of solutions to 2^m == 3 (mod m) (see A050259). %C A127437 Minimal nonnegative solutions to 2^x == 3 (mod a(n)) are given in A127438. %o A127437 (PARI) forprime(p=5,1000, g=znprimroot(p); u=znlog(Mod(2,p),g); v=znlog(Mod(3,p),g); if( v%u==0, print1(p,", "); )) %Y A127437 Cf. A050259, A123988 (complement in the primes). %K A127437 dead %O A127437 1,1 %A A127437 _Max Alekseyev_, Jan 14 2007 %E A127437 Corrected by _Max Alekseyev_, Jun 08 2011 %E A127437 Corrected by _Arkadiusz Wesolowski_, Jan 12 2021