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 A174293 #10 Mar 30 2012 17:26:31 %S A174293 104610,179401,389882,1697463,1981773,3574584,4797113,5476524,7553676, %T A174293 9352165,14891292,17474136,20847121,20874005,26548016,27080647, %U A174293 27182947,35072545,35611783,36576410,40256489,42374708,51527038,53528510,55871968,56270421,57824688 %N A174293 A118860/210. %C A174293 Are all terms composite? %Y A174293 Cf. A118860 Numbers n such that n-/+1, 2n-/+1, 3n-/+1, 4n-/+1 are all primes. %K A174293 nonn %O A174293 1,1 %A A174293 _Zak Seidov_, Nov 27 2010