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A147552 Consider the cellular automaton based on the f.c.c. lattice described in A151776; sequence gives number of ON cells in generation n that lie in the (x,y) plane. 3
0, 1, 5, 9, 21, 25, 37, 49, 77, 81, 93, 105, 133, 153, 181, 217, 285, 289, 301, 313, 341, 361, 389, 425, 493, 529, 557, 593, 661, 729, 805, 905, 1077, 1089, 1117, 1129, 1157, 1177, 1205, 1241, 1309, 1345, 1373 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

First differs from A160720 at a(13).

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 0..68

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]

Nathaniel Johnston, C script

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

CROSSREFS

Cf. A151776, A151836 (first differences), A139250.

Sequence in context: A211424 A211428 A160720 * A299776 A147562 A162795

Adjacent sequences:  A147549 A147550 A147551 * A147553 A147554 A147555

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 13 2009

EXTENSIONS

Terms after a(30) from Nathaniel Johnston, Mar 27 2011

STATUS

approved

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Last modified December 17 00:35 EST 2018. Contains 318191 sequences. (Running on oeis4.)