OFFSET
0,2
COMMENTS
This is the Rule 780 outer totalistic 8-neighbor 2-D CA.
The first few generations are easy to understand, but then there are complications (hence the keyword "look", which refers to the illustrations).
LINKS
N. J. A. Sloane, Illustration of first 28 generations.
N. J. A. Sloane, On the Number of ON Cells in Cellular Automata, arXiv:1503.01168, 2015
MATHEMATICA
Total@*Total /@ CellularAutomaton[{780, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 66]
ArrayPlot /@ CellularAutomaton[{780, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 28]
CROSSREFS
KEYWORD
nonn,look
AUTHOR
N. J. A. Sloane, Aug 23 2014
STATUS
approved