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A068611 Path of a knight's tour on an infinite chessboard. 9
1, 22, 9, 12, 15, 18, 7, 24, 11, 14, 5, 20, 23, 10, 3, 16, 19, 8, 25, 2, 13, 4, 17, 6, 21, 74, 45, 78, 49, 52, 29, 56, 59, 34, 63, 66, 39, 70, 43, 76, 47, 80, 51, 28, 55, 58, 33, 62, 37, 68, 41, 72, 75, 46, 79, 50, 27, 54, 31, 60 (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, A068612, A068613, A068614, A068615.

Sequence in context: A298781 A058402 A248032 * A104061 A196103 A196100

Adjacent sequences:  A068608 A068609 A068610 * A068612 A068613 A068614

KEYWORD

nonn

AUTHOR

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

STATUS

approved

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Last modified October 16 05:41 EDT 2021. Contains 348035 sequences. (Running on oeis4.)