Revision History for A246311
(Underlined text is an addition;
strikethrough text is a deletion.)
Showing all changes.
|
| |
|
| A246311
|
|
Number of ON cells at generation n of 2-D cellular automaton in which a cell is ON iff either 1 or 2 of its eight neighbors were ON at previous generation, starting with a single ON cell.
(history;
published version)
|
| |
|
|
#9 by N. J. A. Sloane at Sat Aug 23 15:03:53 EDT 2014
| |
| |
| |
|
|
#8 by N. J. A. Sloane at Sat Aug 23 15:03:49 EDT 2014
|
|
| LINKS
|
N. J. A. Sloane, <a href="/A246311/a246311.pdf">TITLEIllustration of first FOR28 LINKgenerations</a>
|
| |
| |
|
|
#7 by N. J. A. Sloane at Sat Aug 23 15:03:10 EDT 2014
|
|
| LINKS
|
N. J. A. Sloane, <a href="/A246311/a246311.pdf">TITLE FOR LINK</a>
|
|
| STATUS
|
approved
editing
|
| |
| |
|
|
#6 by N. J. A. Sloane at Sat Aug 23 15:01:57 EDT 2014
| |
| |
| |
|
|
#5 by N. J. A. Sloane at Sat Aug 23 15:01:54 EDT 2014
|
|
| NAME
|
Number of ON cells at generation n of 2-D cellular automaton in which a cell is ON iff either 1, 2 or 32 of its eight neighbors were ON at previous generation, starting with a single ON cell.
|
|
| COMMENTS
|
This is the Rule 25260 outer totalistic 8-neighbor 2-D CA.
|
|
| LINKS
|
N. J. A. Sloane, <a href="/A246308/a246308.pdf">Illustration of first 28 generations.</a>
|
|
| MATHEMATICA
|
Total@*Total /@ CellularAutomaton[{25260, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 66]
ArrayPlot /@ CellularAutomaton[{25260, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 28]
|
| |
| |
|
|
#4 by N. J. A. Sloane at Sat Aug 23 15:01:02 EDT 2014
|
|
| NAME
|
q
Number of ON cells at generation n of 2-D cellular automaton in which a cell is ON iff either 1, 2 or 3 of its eight neighbors were ON at previous generation, starting with a single ON cell.
|
|
| COMMENTS
|
This is the Rule 252 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, <a href="/A246308/a246308.pdf">Illustration of first 28 generations.</a>
|
|
| MATHEMATICA
|
Total@*Total /@ CellularAutomaton[{252, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 66]
ArrayPlot /@ CellularAutomaton[{252, {2, {{2, 2, 2}, {2, 1, 2}, {2, 2, 2}}}, {1, 1}}, {{{1}}, 0}, 28]
|
|
| KEYWORD
|
nonn,look,new
|
|
| STATUS
|
approved
editing
|
| |
| |
|
|
#3 by N. J. A. Sloane at Sat Aug 23 15:00:39 EDT 2014
| |
| |
| |
|
|
#2 by N. J. A. Sloane at Sat Aug 23 15:00:37 EDT 2014
|
|
| NAME
|
allocated for N. J. A. Sloane
q
|
|
| DATA
|
1, 8, 16, 24, 28, 56, 68, 88, 112, 116, 148, 216, 232, 260, 400, 320, 420, 440, 508, 472, 512, 564, 752, 684, 876, 896, 1064, 1064, 1224, 1368, 1620, 1396, 1564, 1612, 1756, 1632, 1976, 1676, 2008, 1848, 2016, 2080, 2332, 2004, 2488, 2332, 2988, 2516, 2868, 3008, 3184, 2956, 3476, 3432, 3556, 3532, 4008, 4116, 4676, 4308, 4984, 5044, 6044, 5148, 5780, 5780, 6200
|
|
| OFFSET
|
0,2
|
|
| KEYWORD
|
allocated
nonn
|
|
| AUTHOR
|
N. J. A. Sloane, Aug 23 2014
|
|
| STATUS
|
approved
editing
|
| |
| |
|
|
#1 by N. J. A. Sloane at Fri Aug 22 16:27:41 EDT 2014
|
|
| NAME
|
allocated for N. J. A. Sloane
|
|
| KEYWORD
|
allocated
|
|
| STATUS
|
approved
|
| |
| |
|
|
