A169688 A169648(4n+4) - A147582(4n+5).

0, 4, 24, 16, 96, 16, 80, 48, 336, 16, 80, 48, 304, 48, 240, 144, 1104, 16, 80, 48, 304, 48, 240, 144, 1040, 48, 240, 144, 912, 144, 720, 432, 3504, 16, 80, 48, 304, 48, 240, 144, 1040, 48, 240, 144, 912, 144, 720, 432, 3376, 48, 240, 144, 912, 144, 720, 432, 3120, 144, 720

Offset

-1,2

Comments

A169648 and A147582 agree except at these terms.

Links

Table of n, a(n) for n=-1..57.

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

For recurrence see A169689.

Crossrefs

Cf. A147582, A169648, A169689.

Sequence in context: A216923 A355992 A233149 * A222595 A103225 A303333

Adjacent sequences: A169685 A169686 A169687 * A169689 A169690 A169691

Keyword

nonn

Author

N. J. A. Sloane, Apr 14 2010

Status

approved