A294981 a(n) is the number of elements added at n-th stage to the structure of the cellular automaton of A294980.

1, 3, 6, 6, 6, 18, 18, 18, 6

Offset

1,2

Links

Table of n, a(n) for n=1..9.

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

Index entries for sequences related to cellular automata

Index entries for sequences related to toothpick sequences

Example

This cellular automaton has word "ab". The row lengths are the terms of A011782 multiplied by 2, so the structure of this irregular triangle is as follows:
a,b;
a,b;
a,b,a,b;
a,b,a,b,a,b,a,b;
a,b,a,b,a,b,a,b,a,b,a,b,a,b,a,b;
...
Triangle begins:
1,  3;
6,  6;
6, 18, 18, 18;
...

Crossrefs

Cf. A294980, A296612 (gives more information about the "word" of a cellular automaton).

Cf. A139251, A160121 (Y-toothpicks), A161207 (V-toothpicks).

Sequence in context: A160504 A291801 A227501 * A079093 A153035 A296216

Adjacent sequences: A294978 A294979 A294980 * A294982 A294983 A294984

Keyword

nonn,tabf,more

Author

Omar E. Pol, Feb 10 2018

Status

approved