A173464 - OEIS

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A173464

When regarded as a triangle, the rows of A162797 converge to this sequence.

1, 5, 5, 17, 5, 17, 21, 49, 5, 17, 21, 49, 21, 53, 81, 129, 5, 17, 21, 49, 21, 53, 81, 129, 21, 53, 81, 133, 81, 165, 289, 321

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..32.

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

EXAMPLE

From Omar E. Pol, Apr 01 2011: (Start)

If written as a triangle begins:

5,17,

5,17,21,49,

5,17,21,49,21,53,81,129,

5,17,21,49,21,53,81,129,21,53,81,133,81,165,289,321,

...

It appears that the final terms of rows give A000337.

It appears that row sums give A010036.

(End)