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A226464 Triangle read by rows giving successive states of cellular automaton generated by "Rule 149". 6
0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0

LINKS

Reinhard Zumkeller, Rows n = 0..120 of triangle, flattened

Eric Weisstein's World of Mathematics, Rule 30

Eric Weisstein's World of Mathematics, Elementary Cellular Automaton

Index entries for sequences related to cellular automata

FORMULA

T(n,k) = 1 - A070950(n,2*n+1-k), 0 <= k <= 2*n+1.

EXAMPLE

Initial rows, terms moved together:

.   0:                           0

.   1:                          000

.   2:                         01100

.   3:                        0000100

.   4:                       011101100

.   5:                      00010000100

.   6:                     0110111101100

.   7:                    000000110000100

.   8:                   01111100011101100

.   9:                  0001110110010000100

.  10:                 011001000010111101100

.  11:                00001011110100110000100

.  12:               0111010011001100011101100

.  13:              000100110001000110010000100

.  14:             01101100011011100010111101100

.  15:            0000000110000010110100110000100

.  16:           011111100011110100001100011101100

.  17:          00011110110011001111000110010000100

.  18:         0110011000010001001101100010111101100

.  19:        000010001110111011000000110100110000100

.  20:       01110111001000100001111100001100011101100

.  21:      0001000101011101111001110111000110010000100

.  22:     011011101010010001101001000101100010111101100

.  23:    00000010010110111000011011101000110100110000100

.  24:   0111110110100000101110000010011100001100011101100

.  25:  000111000001111101001011110110010111000110010000100 .

PROG

(Haskell)

a226464 n k = a226464_tabf !! n !! k

a226464_row n = a226464_tabf !! n

a226464_tabf = map reverse a226463_tabf

CROSSREFS

Cf. A005408 (row lengths), A070951 (row sums), A226474 central terms), A226463 (mirror image, rule 135), A071032 (complemented, rule 86), A070950 (mirrored and complemented, rule 30).

Sequence in context: A337383 A011667 A144195 * A288665 A011759 A316345

Adjacent sequences:  A226461 A226462 A226463 * A226465 A226466 A226467

KEYWORD

nonn,tabf

AUTHOR

Reinhard Zumkeller, Jun 08 2013

STATUS

approved

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Last modified December 2 05:01 EST 2021. Contains 349437 sequences. (Running on oeis4.)