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 A034783 #12 May 13 2018 02:08:59 %S A034783 17,47,55,61,77,91,101,103,107,118,121,123,137,143,147,151,161,170, %T A034783 181,187,195,208,217,237,241,247,248,257,263,266,271,283,287,291,297, %U A034783 305,311,313,331,333,335,342,347,355,367,381,385,391,395,397,406 %N A034783 Numbers k such that A034693(k) = 6. %Y A034783 Cf. A034693, A034694. %K A034783 nonn %O A034783 1,1 %A A034783 _Labos Elemer_