1,2

Greek Key Tours are self-avoiding walks that touch every vertex of the grid and start at the bottom-left corner.

N. Johnston, On Maximal Self-Avoiding Walks.

Cf. A046994, A046995, A145156, A145157

Sequence in context: A142163 A098274 A027549 this_sequence A020998 A012504 A012689

Adjacent sequences: A160238 A160239 A160240 this_sequence A160242 A160243 A160244

hard,more,nonn

Nathaniel Johnston (nathaniel(AT)nathanieljohnston.com), May 05 2009