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A222915 Number of n X 4 0..2 arrays with exactly floor(n X 4/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order. 1
6, 136, 2952, 62336, 1309863, 27663713, 590514107, 12759661261, 278866376604, 6155545744454, 137016855340060, 3071168910680644, 69236193887795927, 1568315505284861894, 35666332338351971086, 813825644002258220522 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A222918.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..1....0..1..1..2....0..1..0..2....0..1..0..0....0..0..1..0
..2..1..1..2....2..2..2..1....0..0..1..0....2..1..1..1....0..0..2..1
..0..2..0..2....0..1..0..2....1..2..0..1....0..2..0..2....1..1..0..2
CROSSREFS
Cf. A222918.
Sequence in context: A196852 A196946 A090407 * A367531 A245104 A075185
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 09 2013
STATUS
approved

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Last modified May 28 16:48 EDT 2024. Contains 372916 sequences. (Running on oeis4.)