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A222790 Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
3, 18, 275, 5896, 137804, 3315998, 80934417, 1992934141, 49390328481, 1230248849616, 30772191192457, 772421301648384, 19447340783043671, 490908234855685636, 12420271942780692035, 314872108569518327475 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A222794

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..138

EXAMPLE

Some solutions for n=3

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

..0..1..1..1....0..1..1..1....0..0..0..2....0..0..1..1....3..0..0..0

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

CROSSREFS

Sequence in context: A327231 A279490 A299431 * A128775 A102100 A083000

Adjacent sequences:  A222787 A222788 A222789 * A222791 A222792 A222793

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 05 2013

STATUS

approved

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Last modified May 20 16:00 EDT 2022. Contains 353874 sequences. (Running on oeis4.)