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 A323714 #14 Sep 26 2019 11:03:13 %S A323714 2084,2720,3325,3753,7776,5632,7411,8562,14076,8469,9231,22702,14661, %T A323714 21710,21078,25809,27112,24708,19844,26943,26737,32449,31366,45036, %U A323714 37853,37188,43318,62095,67401,68736 %N A323714 Squares where knight moving to a lowest unvisited square on a spirally numbered board will have no available moves. %C A323714 First term is the last term of A316667. Next terms are given by repeatedly blocking the squares where the knight would not have any available moves. %C A323714 Plotting the terms on XY-plane seems to show a clear pattern where most of the points only land on certain directions from the center. %C A323714 Inspired by A316667 and comments on N. J. A. Sloane and Brady Haran, The Trapped Knight, Numberphile video (2019). %H A323714 Sami Mäki, <a href="/A323714/b323714.txt">Table of n, a(n) for n = 1..4000</a> %H A323714 N. J. A. Sloane and Brady Haran, <a href="https://www.youtube.com/watch?v=RGQe8waGJ4w">The Trapped Knight</a>, Numberphile video (2019). %Y A323714 Cf. A316667, A323808. %K A323714 nonn,look %O A323714 1,1 %A A323714 _Sami Mäki_, Jan 25 2019