A160161 -id:A160161 - cp's OEIS frontend

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A161211 First differences of A161210.

Original entry on oeis.org

1, 2, 4, 7, 7, 7

Offset: 1

Omar E. Pol, Jun 06 2009

Number of toothpicks added at the n-th round.

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

Cf. A139251, A152980, A160161, A161210, A161213, A161215, A161217.

A160419 a(n) = A160409(n+2)/2.

Original entry on oeis.org

1, 2, 2, 2, 2, 2, 4, 8

Offset: 1

Omar E. Pol, May 23 2009

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

Cf. A139250, A139251, A160160, A160161, A160406, A160407, A160408, A160409, A160418.

Previous Showing 11-12 of 12 results.