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A223051 Number of nX5 0..3 arrays with exactly floor(nX5/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order 0
20, 6918, 3760845, 3067927359, 1653232100317, 1418400034832894, 776620828154120451, 685712239235601065412, 379328869203024209340509, 340703560737717064297739304 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A223052
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1..2..0....0..0..1..2..1....0..0..1..2..1....0..0..1..2..3
..3..0..1..3..2....2..0..3..3..1....0..0..3..0..2....3..0..1..1..3
..1..0..3..0..1....3..0..2..1..0....1..0..1..0..3....1..2..1..0..2
CROSSREFS
Sequence in context: A175015 A135292 A222721 * A222744 A234459 A013725
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 13 2013
STATUS
approved

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Last modified July 18 18:59 EDT 2024. Contains 374388 sequences. (Running on oeis4.)