A168002 Duplicate of A079559.

1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1

Offset

1,1

Comments

Name was: Parity of positive integers of the toothpick sequence in the first quadrant A153000.

Same as A079559: reduce the g.f. of A153000 mod 2 to see this. [Joerg Arndt, Aug 07 2013]

Links

Table of n, a(n) for n=1..105.

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

Formula

a(n) = A000035(A153000(n)). - Omar E. Pol, Aug 06 2013

Crossrefs

Cf. A040051, A079559, A139250, A153000

Sequence in context: A108882 A369989 A284656 * A267050 A267355 A070829

Adjacent sequences: A167999 A168000 A168001 * A168003 A168004 A168005

Keyword

dead

Author

Omar E. Pol, Nov 29 2009

Extensions

More terms from R. J. Mathar, Dec 04 2009

Status

approved