OFFSET
1,2
LINKS
Bert Dobbelaere, Illustration for N=20
Dmitry Kamenetsky, Example solutions for n <= 10
Puzzling StackExchange, Paint Eight Squares, 2021.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Dmitry Kamenetsky, May 14 2021
EXTENSIONS
a(11)-a(20) from Bert Dobbelaere, Jun 13 2021
a(21)-a(24) from Bert Dobbelaere, Jun 19 2021
STATUS
approved