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%I #14 Sep 26 2019 11:03:13
%S 2084,2720,3325,3753,7776,5632,7411,8562,14076,8469,9231,22702,14661,
%T 21710,21078,25809,27112,24708,19844,26943,26737,32449,31366,45036,
%U 37853,37188,43318,62095,67401,68736
%N Squares where knight moving to a lowest unvisited square on a spirally numbered board will have no available moves.
%C 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 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 Inspired by A316667 and comments on N. J. A. Sloane and Brady Haran, The Trapped Knight, Numberphile video (2019).
%H Sami Mäki, <a href="/A323714/b323714.txt">Table of n, a(n) for n = 1..4000</a>
%H N. J. A. Sloane and Brady Haran, <a href="https://www.youtube.com/watch?v=RGQe8waGJ4w">The Trapped Knight</a>, Numberphile video (2019).
%Y Cf. A316667, A323808.
%K nonn,look
%O 1,1
%A _Sami Mäki_, Jan 25 2019
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