OFFSET
1,2
COMMENTS
LINKS
Yi Yang, The longest road in a square grid (see 2nd post with a C++ program that generates a(2)-a(19)).
EXAMPLE
For n = 5, there are 2 such snakes shown as follows:
X . X X X X X X X X
X . X . X . . . . X
X . X . X X X X X X
X . X . X X . . . .
X X X . X X X X X X
CROSSREFS
KEYWORD
nonn,walk,hard,more
AUTHOR
Yi Yang, Oct 01 2022
EXTENSIONS
a(14)-a(16) from Andrew Howroyd, Feb 28 2023
STATUS
approved