The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A278980 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A278980

Binary representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 123", based on the 5-celled von Neumann neighborhood.
(history; published version)

#21 by N. J. A. Sloane at Mon Dec 05 16:21:28 EST 2016

STATUS

proposed

approved

#20 by Robert Price at Mon Dec 05 14:09:17 EST 2016

STATUS

editing

proposed

#19 by Robert Price at Mon Dec 05 14:09:14 EST 2016

EXTENSIONS

Added a(2223) and a(2324) to distinguish the sequence from A278915. - Robert Price, Dec 05 2016

#18 by Robert Price at Mon Dec 05 14:06:08 EST 2016

DATA

1, 1, 1, 1111, 100, 110111, 0, 11111111, 10000, 1111010111, 10000, 111111110111, 1000000, 11111101011111, 1000000, 1111111111111111, 101010000, 111111110101010111, 101010000, 11111111111111010111, 10000010000, 1111111111010111110111, 10001000000, 111111111111111101111111, 1010100010000

EXTENSIONS

Added a(22) and a(23) to distinguish the sequence from A278915. - Robert Price, Dec 05 2016

STATUS

approved

editing

#17 by R. J. Mathar at Mon Dec 05 13:59:32 EST 2016

STATUS

editing

approved

#16 by R. J. Mathar at Mon Dec 05 13:58:58 EST 2016

COMMENTS

Is this the same as Differs from A278915? - _R. J for example at a(24). Mathar_, - _Robert Price_, Dec 05 2016

STATUS

approved

editing

#15 by N. J. A. Sloane at Mon Dec 05 11:38:18 EST 2016

STATUS

proposed

approved

#14 by R. J. Mathar at Mon Dec 05 06:46:10 EST 2016

STATUS

editing

proposed

#13 by R. J. Mathar at Mon Dec 05 06:46:06 EST 2016

COMMENTS

Is this the same as A278915? - R. J. Mathar, Dec 05 2016

STATUS

approved

editing

#12 by N. J. A. Sloane at Sat Dec 03 12:51:41 EST 2016

STATUS

proposed

approved