



1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 3, 5, 4, 1, 1, 2, 2, 2, 3, 5, 4, 2, 3, 5, 5, 6, 10, 13, 8, 1, 1, 2, 2, 2, 3, 5, 4, 2, 3, 5, 5, 6, 10, 13, 8, 2, 3, 5, 5, 6, 10, 13, 9, 6, 10, 14, 15, 21, 32, 33, 16, 1, 1, 2, 2, 2, 3, 5, 4, 2, 3, 5, 5, 6, 10, 13, 8, 2, 3, 5, 5
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,5


COMMENTS

Row lengths are the terms of A000079 multiplied by 2. Right border gives A000079.  Omar E. Pol, Mar 19 2020


LINKS

Table of n, a(n) for n=1..82.
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n1)1) for n >= 2.]
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS


EXAMPLE

From Omar E. Pol, Mar 19 2020: (Start)
Triangle begins:
1,1;
1,1,2,2;
1,1,2,2,2,3,5,4;
1,1,2,2,2,3,5,4,2,3,5,5,6,10,13,8;
1,1,2,2,2,3,5,4,2,3,5,5,6,10,13,8,2,3,5,5,6,10,13,9,6,10,14,15,21,32,33,16;
... (end)


CROSSREFS

Cf. A139250, A139251, A160160, A160161, A160406, A160407, A160408, A160409.
Sequence in context: A331002 A151702 A151552 * A168115 A337530 A269982
Adjacent sequences: A160415 A160416 A160417 * A160419 A160420 A160421


KEYWORD

nonn,tabf


AUTHOR

Omar E. Pol, May 23 2009


EXTENSIONS

More terms from Jinyuan Wang, Mar 14 2020


STATUS

approved



