A161419 -id:A161419 - cp's OEIS frontend

Showing 1-5 of 5 results.

A161828 Number of rhombuses in the Y-toothpick structure of A160120 after n rounds.

Original entry on oeis.org

0, 0, 3, 3, 9, 9, 15, 21, 33, 39

Offset: 0

Omar E. Pol, Jun 21 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, A160120, A160124, A161419, A161418, A161836.

A161418 Number of triangles in the Y-toothpick structure after n rounds.

Original entry on oeis.org

0, 0, 0, 0, 6, 6, 12, 12, 24, 30

Offset: 0

Omar E. Pol, Jun 21 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, A160120, A160124, A161419, A161828, A161836.

A161836 Number of concave-convex hexagons in the Y-toothpick structure of A160120 after n rounds.

Original entry on oeis.org

0, 0, 0, 0, 3, 3, 3, 3, 9, 15

Offset: 0

Omar E. Pol, Jun 21 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, A160120, A160124, A161419, A161418, A161828, A161837.

A161837 First differences of A161836.

Original entry on oeis.org

0, 0, 0, 3, 0, 0, 0, 6, 6

Offset: 1

Omar E. Pol, Jun 21 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. A160120, A161419, A161829, A161836.

A161829 First differences of A161828.

Original entry on oeis.org

0, 3, 0, 6, 0, 6, 6, 12, 6

Offset: 1

Omar E. Pol, Jun 21 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. A160120, A161419, A161828, A161837.

Showing 1-5 of 5 results.