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 A030714 #9 Feb 12 2021 17:59:49 %S A030714 7,12,18,26,35,47,55,57,58,62,75,79,94,97,119,135,138,139,143,170,191, %T A030714 196,198,200,218,234,258,265,266,268,270,309,336,346,347,351,392,397, %U A030714 434,441,442,445,497,530,548,549,554,595,602 %N A030714 Numbers k such that A030707(k) = 2. %Y A030714 Cf. A030707. %K A030714 nonn %O A030714 1,1 %A A030714 _Clark Kimberling_