A279659 Number of 3Xn 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 24, 734, 19986, 498424, 11256083, 239891281, 4888317479, 96326861690, 1848624670794, 34730111197052, 641145448826585, 11663825768257154, 209565710121717098, 3725231374131173587, 65606987929682120630

Offset

1,2

Comments

Row 3 of A279657.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 51

Formula

Empirical recurrence of order 51 (see link above)

Example

Some solutions for n=4
..0..1..0..2. .0..0..1..1. .0..1..0..2. .0..0..1..1. .0..1..2..1
..0..0..0..0. .2..1..0..0. .0..0..2..1. .1..0..2..1. .2..2..2..2
..2..0..1..0. .1..2..2..0. .1..2..1..1. .0..1..1..0. .0..0..2..1

Crossrefs

Cf. A279657.

Sequence in context: A105187 A062313 A239815 * A062528 A175604 A283873

Adjacent sequences: A279656 A279657 A279658 * A279660 A279661 A279662

Keyword

nonn

Author

R. H. Hardin, Dec 16 2016

Status

approved