OFFSET
1,3
COMMENTS
Turns must be chromatically correct. E.g., n=3, R=Right Turn, A=Ahead, longest path is 8:
RAR
A A
RAR
LINKS
Alex Chernov, Length of the longest rook path
CROSSREFS
KEYWORD
hard,nonn
AUTHOR
David Scambler, May 12 2009
EXTENSIONS
a(10)-a(16) from Alex Chernov, Jan 15 2012
STATUS
approved