A317466 Squares visited by a (2,2)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step, squares labelled >=0.

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

Offset

0,2

Comments

Board is numbered with the square spiral:

.

16--15--14--13--12

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17 4---3---2 11 .

| | | |

18 5 0---1 10 .

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19 6---7---8---9 .

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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: A066757 A225306 A331041 * A045219 A325379 A054410

Adjacent sequences: A317463 A317464 A317465 * A317467 A317468 A317469

Keyword

nonn

Author

Daniël Karssen, Jul 29 2018

Status

approved