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 A323750 #13 Sep 26 2019 11:03:13 %S A323750 2084,7081,4698,10847,8399,1164,25963,6760,2269,6500,22421,28273, %T A323750 18946,18643,1202,202891,10059,6425,6662,3039,1383,142679,43325,3744, %U A323750 33725,1460,4639,1952,252953,23684,63577,6040,10841,41836,10017,6338,188501,104413,26546,26967,52736,9145,6580,25799,1869,257479,35652 %N A323750 The label of the ending square of a (m,n)-leaper (a generalization of a chess knight) when it can no longer move, starting on a board with squares spirally numbered, starting at 1. Each move is to the lowest-numbered unvisited square. %C A323750 The entries are the lower triangle of an array, for (m,n)-leaper, where 1 <= n < m, ordered: (2,1), (3,1), (3,2), (4,1), (4,2), etc. %H A323750 Jud McCranie, <a href="/A323750/b323750.txt">Table of n, a(n) for n = 1..19900</a> %H A323750 N. J. A. Sloane and Brady Haran, <a href="https://www.youtube.com/watch?v=RGQe8waGJ4w">The Trapped Knight</a>, Numberphile video (2019). %e A323750 A chess knight (a (2,1)-leaper) makes 2016 moves before it reaches the square labeled 2084 and has no moves available (see A316667). %Y A323750 Cf. A323749, A316667, A317106, A317471, A317416, A323750, A317438, A317916. %K A323750 nonn,tabf %O A323750 1,1 %A A323750 _Jud McCranie_, Jan 26 2019