A279922 Number of nX3 0..2 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 15, 474, 14281, 399487, 11023893, 295670293, 7789959515, 202165948916, 5182571589088, 131491345952984, 3306929199461466, 82536757955761100, 2046354441219248128, 50438781290555301198, 1236742541751845876398

Offset

1,2

Comments

Column 3 of A279925.

Links

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

R. H. Hardin, Empirical recurrence of order 54

Formula

Empirical recurrence of order 54 (see link above)

Example

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

Crossrefs

Cf. A279925.

Sequence in context: A272905 A005815 A120600 * A375727 A129892 A275411

Adjacent sequences: A279919 A279920 A279921 * A279923 A279924 A279925

Keyword

nonn

Author

R. H. Hardin, Dec 23 2016

Status

approved