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 A323132 #9 Jan 10 2019 05:58:14 %S A323132 1,6,25,160,966,6018,37079,227357 %N A323132 Number of uncrossed unrooted knight's paths of length n on an infinite board. %C A323132 Paths which are equivalent under rotation, reflection or reversal are counted only once. %H A323132 Hugo Pfoertner, <a href="http://www.randomwalk.de/sequences/a323132.htm">Illustrations of unrooted uncrossed knight's paths of length <= 4</a>, (2019). %e A323132 See illustrations at Pfoertner link. %Y A323132 Cf. A003192, A001334, A151541, A272773, A306178, A323131, A323133, A323134. %K A323132 nonn,walk,more,hard %O A323132 1,2 %A A323132 _Hugo Pfoertner_, Jan 05 2019