OFFSET
1,2
COMMENTS
A (1,2) leaper is a chess knight.
a(2)-a(5) were computed by Daniël Karssen.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..1000
Rémy Sigrist, C++ program for A323470
N. J. A. Sloane and Brady Haran, The Trapped Knight, Numberphile video (2019)
PROG
(C++) See Links section.
CROSSREFS
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jan 28 2019
EXTENSIONS
More terms from Rémy Sigrist, Jan 29 2019
STATUS
approved