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A222670 Number of nX5 0..2 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order 1
4, 24, 90, 2370, 17696, 426362, 4030527, 115311310, 1138939624, 33371066606, 333504416113, 9869885381863, 98742842374798, 2936314625332784, 29380754050688425, 877025222448714052, 8774880700816611500 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A222673

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..64

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A026967 A026977 A026952 * A225681 A259814 A009769

Adjacent sequences:  A222667 A222668 A222669 * A222671 A222672 A222673

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 28 2013

STATUS

approved

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Last modified August 14 09:14 EDT 2020. Contains 336480 sequences. (Running on oeis4.)