A255049 a(n) = 2*A160552(n).

0, 2, 2, 6, 2, 6, 10, 14, 2, 6, 10, 14, 10, 22, 34, 30, 2, 6, 10, 14, 10, 22, 34, 30, 10, 22, 34, 38, 42, 78, 98, 62, 2, 6, 10, 14, 10, 22, 34, 30, 10, 22, 34, 38, 42, 78, 98, 62, 10, 22, 34, 38, 42, 78, 98, 70, 42, 78, 106, 118, 162, 254, 258, 126, 2, 6, 10, 14, 10

Offset

0,2

Links

Table of n, a(n) for n=0..68.

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

Index entries for sequences related to cellular automata

Formula

It appears that a(n) = A169708(n)/2, n >= 1.

Example

Written as an irregular triangle in which row lengths are the terms of A011782 the sequence begins:
0;
2;
2,6;
2,6,10,14;
2,6,10,14,10,22,34,30;
2,6,10,14,10,22,34,30,10,22,34,38,42,78,98,62;
2,6,10,14,10,22,34,30,10,22,34,38,42,78,98,62,10,22,34,38,42,78,98,70,42,78,106,118,162,254,258,126;
It appears that row sums give 0 together with A004171, (see also A081294).
It appears that right border gives the nonnegative terms of A000918, (see also A095121).

Crossrefs

Cf. A000918, A004171, A081294, A095121, A139250, A160164, A160552, A169707, A169708, A187220.

Sequence in context: A338616 A174028 A084426 * A187564 A138061 A257257

Adjacent sequences: A255046 A255047 A255048 * A255050 A255051 A255052

Keyword

nonn,tabf

Author

Omar E. Pol, Feb 13 2015

Extensions

Edited by Omar E. Pol, Feb 18 2015

Status

approved