OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Black Bishop Graph
Eric Weisstein's World of Mathematics, Maximal Irredundant Set
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Aug 17 2017
EXTENSIONS
a(7)-a(10) from Andrew Howroyd, Aug 19 2017
STATUS
approved