A172305 Number of L-toothpicks added to the L-toothpick structure of A172304 at the n-th stage.

0, 2, 4, 8, 8, 8, 16, 16, 8, 16, 24, 24, 32, 24, 48, 40, 24, 16, 24, 40, 48, 40, 56, 56, 64, 64, 72, 56, 64, 48, 80, 88, 32, 32, 64, 72, 64, 40, 64, 80, 96, 104, 144, 96, 128, 120, 160, 112, 96, 80, 128, 128, 144, 88, 136, 128, 136, 144, 168, 168, 216, 160, 192, 168, 64, 80, 128

Offset

0,2

Links

Robert Price, Table of n, a(n) for n = 0..202

David Applegate, The movie version

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

Crossrefs

Cf. First differences of A172304.

Cf. A139250, A139251, A172304, A172306, A172307, A172308, A172309, A172310, A172311, A172312, A172313.

Sequence in context: A008496 A178573 A162794 * A366569 A187221 A129280

Adjacent sequences: A172302 A172303 A172304 * A172306 A172307 A172308

Keyword

nonn

Author

Omar E. Pol, Feb 06 2010

Extensions

More terms from Colin Barker, Apr 19 2015

a(49)-a(66) from Robert Price, Jun 17 2019

Status

approved