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A222575

Number of 3Xn 0..2 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

5, 5, 11, 56, 134, 1500, 3999, 46250, 126987, 1462034, 4136257, 46688904, 136406909, 1501835282, 4510551635, 48637741544, 149382874117, 1583951305266, 4954925376243, 51834151640684, 164570402519621, 1703435934148924

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

OFFSET

1,1

COMMENTS

Row 3 of A222573

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..25

EXAMPLE

Some solutions for n=3

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

..1..0..0....0..0..0....1..1..1....0..0..0....0..0..1....1..1..1....0..0..0

..0..0..0....0..0..0....1..1..1....0..0..1....0..0..0....1..1..1....1..0..0