id:A079315 - OEIS Search Results

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Number of cells born at stage n of Ulam-Warburton cellular automaton.

+0
2

1, 4, 4, 12, 4, 20, 12, 44, 4, 52, 12, 76, 12, 100, 36, 172, 4, 180, 12, 204, 12, 228, 36, 300, 12, 324, 36, 396, 36, 468, 108, 684, 4, 692, 12, 716, 12, 740, 36, 812, 12, 836, 36, 908, 36, 980, 108, 1196, 12, 1220, 36, 1292, 36, 1364, 108, 1580, 36, 1652, 108, 1868 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Start with cell (0,0) active; at each succeeding stage the cells that share exactly one edge with an active cell change their state.`
	REFERENCES	`D. Singmaster, On the cellular automaton of Ulam and Warburton, preprint, 2003.`
	CROSSREFS	`Cf. A079314-A079319.` `Sequence in context: A048223 A014012 A109045 this_sequence A121189 A136485 A053415` `Adjacent sequences: A079312 A079313 A079314 this_sequence A079316 A079317 A079318`
	KEYWORD	`nonn`
	AUTHOR	`njas, Feb 12 2003`
	EXTENSIONS	`More terms from John W. Layman (layman(AT)math.vt.edu), Oct 30 2003`

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Last modified September 8 13:03 EDT 2008. Contains 143486 sequences.

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