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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

R. H. Hardin, Table of n, a(n) for n = 1..112

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

Adjacent sequences:  A222883 A222884 A222885 * A222887 A222888 A222889

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 08 2013

STATUS

approved

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Last modified January 24 04:47 EST 2022. Contains 350534 sequences. (Running on oeis4.)