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A068613 Path of a knight's tour on an infinite chessboard. 9
1, 24, 7, 18, 15, 12, 9, 22, 19, 16, 3, 10, 23, 20, 5, 14, 11, 8, 21, 6, 17, 4, 13, 2, 25, 80, 47, 76, 43, 70, 39, 66, 63, 34, 59, 56, 29, 52, 49, 78, 45, 74, 71, 40, 67, 64, 35, 60, 31, 54, 27, 50, 79, 46, 75, 72, 41, 68, 37, 62 (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

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

CROSSREFS

Cf. A068608, A068609, A068610, A068611, A068612, A068614, A068615.

Sequence in context: A040559 A339007 A339008 * A297983 A298632 A241362

Adjacent sequences:  A068610 A068611 A068612 * A068614 A068615 A068616

KEYWORD

nonn,look

AUTHOR

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

STATUS

approved

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Last modified December 8 02:41 EST 2021. Contains 349590 sequences. (Running on oeis4.)