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A317916 Squares visited by a (2,5)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step. 6

%I

%S 1,84,31,18,27,44,15,48,41,12,37,22,33,26,19,30,47,16,43,10,39,32,23,

%T 36,29,20,49,14,45,38,11,42,35,24,69,98,187,88,61,104,193,94,53,118,

%U 173,286,163,82,177,134,249,144,203,110,345,216,71,2,67,60,7,50,13,40

%N Squares visited by a (2,5)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step.

%C Board is numbered with the square spiral:

%C 17--16--15--14--13

%C | |

%C 18 5---4---3 12 .

%C | | | |

%C 19 6 1---2 11 .

%C | | |

%C 20 7---8---9--10 .

%C |

%C 21--22--23--24--25--26

%C The sequence is finite: at step 7574, square 6760 is visited, after which there are no unvisited squares within one move.

%H Daniël Karssen, <a href="/A317916/b317916.txt">Table of n, a(n) for n = 1..7574</a>

%H Daniël Karssen, <a href="/A317916/a317916.svg">Figure showing the first 35 steps of the sequence</a>

%H Daniël Karssen, <a href="/A317916/a317916_1.svg">Figure showing the complete sequence</a>

%F a(n) = A317915(n-1) + 1.

%Y Cf. A317915, A317918.

%K nonn,fini,full

%O 1,2

%A _Daniël Karssen_, Aug 11 2018

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Last modified October 22 22:35 EDT 2021. Contains 348180 sequences. (Running on oeis4.)