OFFSET
1,2
COMMENTS
Two squares are allowed to meet in an edge, but the structure must be connected through pure corner-connections (where the two squares meet in a single point) only. There are 3 such cases of size 3; see the linked illustration.
LINKS
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Pontus von Brömssen, Sep 17 2023
STATUS
approved