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 A319405 #8 Sep 19 2018 05:45:06 %S A319405 0,0,0,0,0,1,7,34,139,512,1757,5727,17952,54577 %N A319405 Column 3 of triangle A318945. %H A319405 Czabarka, É., Flórez, R., Junes, L., & Ramírez, J. L., <a href="https://doi.org/10.1016/j.disc.2018.06.032">Enumerations of peaks and valleys on non-decreasing Dyck paths</a>, Discrete Mathematics (2018), 341(10), 2789-2807. %Y A319405 Cf. A318945. %K A319405 nonn,more %O A319405 0,7 %A A319405 _N. J. A. Sloane_, Sep 18 2018