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 A042988 #8 Jun 26 2022 23:16:59 %S A042988 2,3,5,7,11,17,19,23,29,31,37,43,47,53,59,61,67,71,73,79,89,101,103, %T A042988 107,109,113,127,131,137,149,151,157,163,173,179,191,193,197,199,211, %U A042988 227,229,233,239,241,257,263,269 %N A042988 Primes not congruent to -1 (mod 7). %t A042988 Select[Prime[Range[60]],Mod[#,7]!=6&] (* _Harvey P. Dale_, Sep 07 2016 *) %K A042988 nonn %O A042988 0,1 %A A042988 _N. J. A. Sloane_