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A222885
Number of nX2 0..2 arrays with exactly floor(nX2/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order
2
0, 4, 22, 184, 1222, 9918, 73038, 571736, 4390202, 34351802, 267982304, 2106587634, 16576619646, 130932847630, 1036002954358, 8216574460288, 65272910779558, 519408134342898, 4138939523056050, 33024940436137874, 263814619538403032
OFFSET
1,2
COMMENTS
Column 2 of A222889
LINKS
EXAMPLE
Some solutions for n=3
..0..0....0..1....0..1....0..1....0..0....0..1....0..1....0..1....0..1....0..0
..1..0....2..2....0..2....2..1....0..1....1..2....2..2....2..2....1..1....0..1
..2..1....1..2....0..1....0..1....2..0....2..2....2..1....2..0....2..0....1..0
CROSSREFS
Sequence in context: A125863 A004115 A362747 * A235329 A220231 A112370
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 08 2013
STATUS
approved