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 A271474 #8 Oct 07 2020 10:26:19 %S A271474 0,1,3,4,8,12,15,21,27,35,42,50 %N A271474 Maximal number of flips required to sort a stack of n unburnt pancakes using the big-3 flips. %H A271474 J. Sawada and A. Williams, <a href="http://www.cis.uoguelph.ca/~sawada/papers/pancake_successor.pdf">Successor rules for flipping pancakes and burnt pancakes</a>, Preprint 2015. %Y A271474 Cf. A058986. %K A271474 nonn,more %O A271474 1,3 %A A271474 _N. J. A. Sloane_, Apr 09 2016