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A222788 Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
0, 3, 8, 55, 294, 1883, 11920, 78255, 517050, 3451712, 23156964, 156076271, 1055435486, 7157673375, 48656943008, 331450961443, 2261939399694, 15461147598417, 105834401893220, 725394224374344, 4977715076045096 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A222794

LINKS

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

EXAMPLE

All solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A322461 A192647 A121567 * A308572 A101361 A104034

Adjacent sequences:  A222785 A222786 A222787 * A222789 A222790 A222791

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 05 2013

STATUS

approved

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Last modified May 26 08:00 EDT 2022. Contains 354077 sequences. (Running on oeis4.)