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A223129 Number of 4Xn 0..2 arrays with no more than floor(4Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order 1
14, 664, 33604, 1780641, 95995609, 5237368607, 288571160526, 16027080505369, 895863901854996, 50338336373575693, 2840746375350118566, 160894419525331340526, 9140889738498087938175, 520699963561902675358667 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A223126

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A139196 A336513 A233078 * A303288 A277299 A233506

Adjacent sequences: A223126 A223127 A223128 * A223130 A223131 A223132

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 15 2013

STATUS

approved

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Last modified November 27 07:59 EST 2022. Contains 358362 sequences. (Running on oeis4.)