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A198640 Number of 2nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors 1
376, 162776, 70145916, 30189380016, 13004327687556, 5601924832399656, 2413172096267222836, 1039537719846439186376, 447808510571760655158776, 192905432626763894473193096, 83099149713982969238814113576 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A198642
LINKS
EXAMPLE
Some solutions for n=2
..0..1..0..1..0..1....0..1..0..2..1..0....0..0..1..2..1..2....0..0..1..2..1..0
..2..0..1..0..1..0....2..0..2..0..2..1....0..0..2..1..2..0....0..0..2..0..2..2
..0..1..0..1..2..2....0..2..1..2..1..2....1..2..1..2..1..2....1..2..1..1..2..2
..1..2..1..0..2..2....2..1..2..0..2..0....2..1..2..1..2..1....2..0..1..1..0..1
CROSSREFS
Sequence in context: A251644 A234916 A288916 * A171489 A105717 A352264
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 27 2011
STATUS
approved

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Last modified February 21 15:08 EST 2024. Contains 370236 sequences. (Running on oeis4.)