OFFSET
0,3
COMMENTS
On a white cell, turn 60 degrees right, flip the color of the cell, then move forward one unit. On a black cell, turn 60 degrees left, flip the color of the cell, then move forward one unit.
One may see the ant as (1) living on a hexagonal tiling (as in the illustration), in which case one third of all tiles are never visited, or (2) as living on a triangular tiling, in which case these never-visited hexagonal tiles are divided between six neighboring tiles to form triangular tiles, or (3) as living on a hexagonal grid understood as a graph dual to that triangular tiling, in which case the ant travels from one vertex to another using edges. - Andrey Zabolotskiy, Oct 09 2016
LINKS
Oleg Nikulin, Table of n, a(n) for n = 0..10000
Felix Fröhlich, Illustration of a(0)-a(19)
Wikipedia, Langton's ant
CROSSREFS
KEYWORD
nonn
AUTHOR
Felix Fröhlich, Mar 04 2016
EXTENSIONS
More terms from Oleg Nikulin, Jul 22 2016
STATUS
approved