A222789 - OEIS

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A222789

Number of nX3 0..3 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

0, 4, 34, 582, 3800, 92642, 589134, 15697114, 101205850, 2768968458, 17982090240, 499074464184, 3254525287074, 91174422158328, 596469391588434, 16817976440314170, 110319637897696154, 3125091350637342914

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 3 of A222794

LINKS

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

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..1....0..1..2....0..1..1....0..0..1....0..0..0....0..1..1

..0..0..1....2..1..1....2..2..2....1..1..1....0..1..1....0..0..0....2..1..1

..1..0..0....1..1..1....2..2..2....1..1..2....1..1..1....1..2..2....1..1..1