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A222172 Total number of ON states after n generations of cellular automaton based on pentagons starting near of the vertex of an infinite 36-degree wedge. 3
0, 1, 2, 3, 5, 8, 10, 11, 13, 17, 21, 24, 29, 36, 40, 41, 43, 47, 53, 61 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
The sequence gives the number of pentagons in the structure after n-th stage. A222173 (the first differences) gives the number of pentagons added at n-th stage.
Also P-toothpick sequence starting near of the vertex of an infinite 36-degree wedge, since each pentagon can be replaced by a P-toothpick.
For more information see A222180.
First differs from A153000 at a(9).
LINKS
FORMULA
a(n) = (((A222180(n+2) - 1)/5) - 1)/2 = (A222176(n+1) - 1)/2.
a(n) = (A222180(n+2) - 6)/10. - Omar E. Pol, Nov 24 2013
CROSSREFS
Sequence in context: A047605 A295085 A153000 * A326379 A099107 A261255
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Mar 21 2013
EXTENSIONS
Name improved by Omar E. Pol, Nov 24 2013
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)