A317439 -id:A317439 - cp's OEIS frontend

A317437 Squares visited by a (1,5)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step, squares labelled >=0.

0, 84, 22, 32, 24, 30, 16, 28, 18, 26, 20, 34, 54, 4, 52, 6, 50, 44, 14, 46, 12, 36, 58, 8, 60, 88, 124, 178, 230, 48, 74, 38, 10, 40, 62, 92, 140, 186, 238, 176, 122, 86, 80, 114, 154, 104, 72, 116, 158, 106, 64, 94, 130, 174, 168, 218, 276, 42, 66, 2, 68, 98, 136

Offset: 0

Daniël Karssen, Jul 28 2018

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 14569, square 25962 is visited, after which there are no unvisited squares within one move.

Daniël Karssen, Table of n, a(n) for n = 0..14569
Daniël Karssen, Figure showing the first 26 steps of the sequence
Daniël Karssen, Figure showing the complete sequence

Cf. A317438, A317439.

a(n) = A317438(n+1) - 1.

cp's OEIS Frontend

A317437 Squares visited by a (1,5)-leaper on a spirally numbered board and moving to the lowest available unvisited square at each step, squares labelled >=0.

Views

Author

Keywords

Comments

Links

Crossrefs

Formula