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A317915 Squares visited by a (2,5)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step. 3
0, 83, 30, 17, 26, 43, 14, 47, 40, 11, 36, 21, 32, 25, 18, 29, 46, 15, 42, 9, 38, 31, 22, 35, 28, 19, 48, 13, 44, 37, 10, 41, 34, 23, 68, 97, 186, 87, 60, 103, 192, 93, 52, 117, 172, 285, 162, 81, 176, 133, 248, 143, 202, 109, 344, 215, 70, 1, 66, 59, 6, 49, 12, 39 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Board is numbered with the square spiral:

  16--15--14--13--12

   |               |

  17   4---3---2  11   .

   |   |       |   |

  18   5   0---1  10   .

   |   |           |

  19   6---7---8---9   .

   |

  20--21--22--23--24--25

The sequence is finite: at step 7573, square 6759 is visited, after which there are no unvisited squares within one move.

LINKS

Daniël Karssen, Table of n, a(n) for n = 0..7573

Daniël Karssen, Figure showing the first 35 steps of the sequence

Daniël Karssen, Figure showing the complete sequence

FORMULA

a(n) = A317916(n+1) - 1.

CROSSREFS

Cf. A317916, A317917.

Sequence in context: A113890 A051327 A272637 * A033403 A174092 A134456

Adjacent sequences:  A317912 A317913 A317914 * A317916 A317917 A317918

KEYWORD

nonn,fini,full

AUTHOR

Daniël Karssen, Aug 11 2018

STATUS

approved

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Last modified June 1 17:22 EDT 2020. Contains 334762 sequences. (Running on oeis4.)