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A294980
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a(n) is the total number of elements after n-th stage in a hybrid cellular automaton formed by Y-toothpicks and V-toothpicks (see Comments lines for precise definition).
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7
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OFFSET
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0,3
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COMMENTS
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We are on the infinite triangular grid.
At stage 0 there are no elements in the structure, so a(0) = 0.
If n is odd at n-th stage we add Y-toothpicks to the structure.
If n is a positive even number at n-th stage we add V-toothpicks to the structure.
a(n) is the total number of Y-toothpicks and V-toothpicks after n-th stages.
A294981(n) gives the number of elements added to the structure at n-th stage.
The "word" of this cellular automaton is "ab". For further information about the word of cellular automata see A296612. - Omar E. Pol, Mar 05 2019
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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