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A317466 Squares visited by a (2,2)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step. 3
0, 12, 52, 24, 76, 20, 68, 16, 60, 136, 56, 128, 232, 124, 80, 164, 280, 160, 72, 152, 264, 148, 64, 140, 248, 388, 244, 132, 236, 372, 540, 368, 228, 168, 284, 432, 612, 428, 276, 156, 268, 412, 588, 408, 260, 144, 252, 392, 564, 768, 560, 384, 240, 376 (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

LINKS

Daniël Karssen, Table of n, a(n) for n = 0..9999

Daniël Karssen, Figure showing the first 11 steps of the sequence

Daniël Karssen, Figure showing the first 9999 steps of the sequence

FORMULA

a(n) = A317467(n+1) - 1.

CROSSREFS

Cf. A317467, A317468.

Sequence in context: A231359 A066757 A225306 * A045219 A325379 A054410

Adjacent sequences:  A317463 A317464 A317465 * A317467 A317468 A317469

KEYWORD

nonn

AUTHOR

Daniël Karssen, Jul 29 2018

STATUS

approved

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Last modified October 14 14:42 EDT 2019. Contains 328019 sequences. (Running on oeis4.)