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A222902 Number of nX4 0..3 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order 1
4, 25, 373, 7794, 180203, 4320431, 105327353, 2592612272, 64243363904, 1600125512239, 40022606753953, 1004596097977296, 25292398905119297, 638445931307999125, 16152880969313405490, 409495374971029069517 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A222906

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..136

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A259591 A093959 A308476 * A086216 A167041 A123129

Adjacent sequences:  A222899 A222900 A222901 * A222903 A222904 A222905

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 09 2013

STATUS

approved

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Last modified August 10 04:38 EDT 2020. Contains 336368 sequences. (Running on oeis4.)