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A071029 Triangle read by rows giving successive states of cellular automaton generated by "Rule 22". 9
1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Row n has length 2n+1.

REFERENCES

S. Wolfram, A New Kind of Science, Wolfram Media, 2002; Chapter 3.

LINKS

Michael De Vlieger, Table of n, a(n) for n = 0..10000

Michael De Vlieger, Illustration of first 256 generations

S. Wolfram, A New Kind of Science

Index to Elementary Cellular Automata

Index entries for sequences related to cellular automata

EXAMPLE

From Michael De Vlieger, Oct 05 2015: (Start)

First 8 rows, replacing "0" with "." for better visibility of ON cells:

                1

              1 1 1

            1 . . . 1

          1 1 1 . 1 1 1

        1 . . . . . . . 1

      1 1 1 . . . . . 1 1 1

    1 . . . 1 . . . 1 . . . 1

  1 1 1 . 1 1 1 . 1 1 1 . 1 1 1

1 . . . . . . . . . . . . . . . 1

(End)

MATHEMATICA

clip[lst_] := Block[{p = Flatten@ Position[lst, 1]}, Take[lst, {Min@ p, Max@ p}]]; clip /@ CellularAutomaton[22, {{1}, 0}, 9] // Flatten (* Michael De Vlieger, Oct 05 2015 *)

CROSSREFS

For number of ON cells see A071044.

Sequence in context: A084052 A130630 A059318 * A071030 A104037 A014044

Adjacent sequences:  A071026 A071027 A071028 * A071030 A071031 A071032

KEYWORD

nonn,tabf

AUTHOR

Hans Havermann, May 26 2002

EXTENSIONS

Corrected by Hans Havermann, Jan 07 2012

STATUS

approved

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Last modified November 23 20:23 EST 2017. Contains 295141 sequences.