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A203440
Number of nX5 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors
0
1, 2528, 4401184, 3216740482, 1842430382222, 1163067191357930, 781112517644514067, 520944312459613615031, 344915375300852781639149, 229146836391481660904752370, 152707095706138036937766893448
OFFSET
1,2
COMMENTS
Column 5 of A203443
EXAMPLE
Some solutions for n=5
..3..3..1..3..3....5..5..4..7..7....3..4..4..3..0....1..5..5..3..0
..3..3..3..3..3....7..7..1..7..7....4..6..6..5..0....6..6..5..5..0
..7..7..6..3..0....7..7..0..7..7....4..6..6..5..0....6..6..2..5..4
..7..7..6..0..0....6..5..6..6..1....7..7..3..5..4....7..7..3..6..6
..5..5..5..0..0....6..6..6..2..0....7..7..5..5..4....7..7..2..6..6
CROSSREFS
Sequence in context: A373704 A268332 A369521 * A231968 A172142 A206596
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 01 2012
STATUS
approved