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A222886 Number of nX3 0..2 arrays with exactly floor(nX3/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order 1
0, 22, 380, 8986, 138026, 3581166, 57340458, 1518623878, 24604366312, 662054698922, 10817215966920, 294063979484997, 4832183409627316, 132325719376647368, 2183594275921814750, 60123141373479325036 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A222889
LINKS
EXAMPLE
Some solutions for n=3
..0..1..1....0..1..2....0..0..0....0..0..1....0..0..0....0..1..0....0..1..0
..2..0..2....0..2..1....1..0..1....2..0..0....1..2..0....2..2..0....0..0..2
..1..0..1....2..0..0....0..1..2....0..1..2....2..0..1....1..0..2....0..1..0
CROSSREFS
Sequence in context: A167122 A132167 A167033 * A264464 A268947 A159761
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 08 2013
STATUS
approved

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Last modified February 22 15:38 EST 2024. Contains 370256 sequences. (Running on oeis4.)