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A222668 Number of nX3 0..2 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order 1
0, 2, 2, 40, 90, 1336, 3458, 44516, 126476, 1527344, 4599422, 53131172, 167316392, 1872027432, 6086187592, 66611566008, 221500197840, 2388653206624, 8068017360224, 86178588357352, 294198667299936, 3124170165050528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A222673

LINKS

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

EXAMPLE

All solutions for n=3

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

..0..0..0....0..0..0

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

CROSSREFS

Sequence in context: A038623 A001121 A202711 * A210246 A116567 A215049

Adjacent sequences:  A222665 A222666 A222667 * A222669 A222670 A222671

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 28 2013

STATUS

approved

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Last modified May 17 19:51 EDT 2022. Contains 353778 sequences. (Running on oeis4.)