A316885 Squares visited by queen moves on a spirally numbered board, always moving to the lowest available unvisited prime square at each step.

1, 2, 3, 5, 7, 13, 11, 19, 17, 37, 31, 29, 23, 47, 43, 41, 59, 61, 53, 97, 67, 71, 73, 79, 103, 89, 83, 109, 101, 107, 137, 139, 127, 131, 113, 181, 173, 167, 157, 149, 151, 163, 227, 229, 193, 191, 197, 199, 211, 223, 311, 239, 233, 241, 251, 257, 263, 269

Offset

1,2

Comments

Board is numbered with the square spiral:

.

17--16--15--14--13

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18 5---4---3 12 .

| | | |

19 6 1---2 11 .

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20 7---8---9--10 .

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21--22--23--24--25--26

Links

Daniël Karssen, Table of n, a(n) for n = 1..100

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

Crossrefs

Sequence in context: A338944 A351528 A185956 * A225039 A264731 A262350

Adjacent sequences: A316882 A316883 A316884 * A316886 A316887 A316888

Keyword

nonn

Author

Daniël Karssen, Jul 15 2018

Status

approved