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 A175518 #2 Mar 30 2012 17:26:34 %S A175518 1,17,101,501,1627,2133,2143,2201,2243,3086,3536,3869,4163,4398,4477, %T A175518 5598,5948,5982,6101,6998,7113,7807,8501,8693,9177,9928,10927,11127, %U A175518 11177,11545,11836,12427,12780,13043,13998,14227,14448,14517,14822 %N A175518 Numbers n such that 9n+4 are terms in A072841. %C A175518 (A072841-4)/9. %Y A175518 A072841 %K A175518 base,nonn %O A175518 1,2 %A A175518 _Zak Seidov_, Jun 04 2010