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A068615 Path of a knight's tour on an infinite chessboard. 9
1, 16, 3, 10, 23, 20, 5, 14, 11, 24, 7, 18, 15, 12, 9, 22, 19, 4, 13, 2, 25, 8, 21, 6, 17, 64, 35, 60, 31, 54, 27, 50, 79, 46, 75, 72, 41, 68, 37, 62, 33, 58, 55, 28, 51, 80, 47, 76, 43, 70, 39, 66, 63, 34, 59, 56, 29, 52, 49, 78 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

One of eight possible knight's tours. Squares are numbered in a clockwise spiral. Enumerates all positive integers.

LINKS

Hugo Pfoertner, Table of n, a(n) for n = 0..1088 [Offset adapted by Georg Fischer, Jun 04 2019]

Frank Ellermann, Sequences based on a spiral of the natural numbers

CROSSREFS

Cf. A068608, A068609, A068610, A068611, A068612, A068613, A068614.

Sequence in context: A099143 A070709 A247585 * A341720 A139722 A070582

Adjacent sequences:  A068612 A068613 A068614 * A068616 A068617 A068618

KEYWORD

nonn

AUTHOR

Hans Secelle and Albrecht Heeffer (albrecht.heeffer(AT)pandora.be), Mar 09 2002

STATUS

approved

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Last modified November 30 20:17 EST 2021. Contains 349425 sequences. (Running on oeis4.)