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A068608 Path of a knight's tour on an infinite chessboard. 7
1, 10, 3, 16, 19, 22, 9, 12, 15, 18, 7, 24, 11, 14, 5, 20, 23, 2, 13, 4, 17, 6, 21, 8, 25, 50, 27, 54, 31, 60, 35, 64, 67, 40, 71, 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 (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

Table of n, a(n) for n=0..59.

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

CROSSREFS

Cf. A068609, A068610, A068611, A068612, A068613, A068614, A068615.

Sequence in context: A110409 A064211 A050133 * A195817 A228314 A243239

Adjacent sequences:  A068605 A068606 A068607 * A068609 A068610 A068611

KEYWORD

nonn,easy

AUTHOR

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

STATUS

approved

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Last modified December 20 07:03 EST 2014. Contains 252241 sequences.