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
N. J. A. Sloane and Brady Haran, The Trapped Knight, Numberphile video (2019)
CROSSREFS
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jan 28 2019
EXTENSIONS
More terms from Rémy Sigrist, Jan 29 2019
STATUS
approved