A267701 a(n) = (A160121(n) - A266533(n))/6.

0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 4, 0, 0, 0, 1, 0, 0, 1, 4, 0, 1, 1, 5, 2, 4, 4, 13, 2, 0, 0, 1, 0, 1, 1, 4, 0, 1, 1, 5, 2, 4, 4, 13, 2, 1, 1, 5, 2, 5, 6, 16, 5, 4, 4, 15, 8, 13, 15, 38, 10, 0, 0, 1, 0, 1

Offset

1,17

Comments

a(n) is 1/6 of the difference between the number of Y-toothpicks added at n-th stage in the structure of A160120 and the number of Y-toothpicks added at n-th stage stage in the structure of A266532 (the outward version of A160120).

Links

Table of n, a(n) for n=1..71.

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

Index entries for sequences related to cellular automata

Index entries for sequences related to toothpick sequences

Example

Written as an irregular triangle in which the row lengths are the terms of A011782 the sequence begins:
0;
0;
0,  0;
0,  0,0,0;
1,  0,0,0,1,0,1,1;
4,  0,0,0,1,0,0,1,4,0,1,1,5,2,4,4;
13, 2,0,0,1,0,1,1,4,0,1,1,5,2,4,4,13,2,1,1,5,2,5,6,16,5,4,4,15,8,13,15;
38,10,0,0,1,0,1...

Crossrefs

Cf. A011782, A038573, A160120, A160121, A266532, A266533.

Sequence in context: A333037 A070206 A228368 * A387725 A128975 A362802

Adjacent sequences: A267698 A267699 A267700 * A267702 A267703 A267704

Keyword

nonn,tabf,more

Author

Omar E. Pol, Jan 19 2016

Status

approved