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A160425
a(n) = number of grid points that are covered after n-th rounds of
A160120
.
2
0, 4, 10, 19, 31, 40
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..5.
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.]
N. J. A. Sloane,
Catalog of Toothpick and Cellular Automata Sequences in the OEIS
CROSSREFS
Cf.
A139250
,
A147614
,
A160120
,
A160121
,
A160128
.
Sequence in context:
A219965
A008038
A301248
*
A152946
A162505
A025720
Adjacent sequences:
A160422
A160423
A160424
*
A160426
A160427
A160428
KEYWORD
more
,
nonn
AUTHOR
Omar E. Pol
, Jun 01 2009
STATUS
approved
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Last modified April 25 05:55 EDT 2024. Contains 371964 sequences. (Running on oeis4.)