

A068609


Path of a knight's tour on an infinite chessboard.


9



1, 14, 5, 20, 23, 10, 3, 16, 19, 22, 9, 12, 15, 18, 7, 24, 11, 4, 17, 6, 21, 8, 25, 2, 13, 58, 33, 62, 37, 68, 41, 72, 75, 46, 79, 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
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OFFSET

0,2


COMMENTS

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


LINKS



CROSSREFS



KEYWORD

nonn


AUTHOR

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


EXTENSIONS

a(56), which had been shown as 37, corrected to 39 by Kevin Ryde, Jan 17 2012


STATUS

approved



