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A203061
Number of nX3 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor
1
49, 16625, 3421817, 608893191, 111898706731, 20929382959987, 3898031053158067, 724530008223344653, 134743665957095646765, 25064589517883536625961, 4662096688032488638076973, 867142733431123407591563935
OFFSET
1,1
COMMENTS
Column 3 of A203066
LINKS
EXAMPLE
Some solutions for n=5
..0..3..1....2..0..5....0..0..4....4..2..4....3..0..2....0..3..0....2..5..1
..1..5..1....6..5..6....2..4..4....4..6..4....3..0..2....4..4..3....0..5..6
..4..5..2....6..4..6....0..4..2....6..6..5....3..4..6....6..6..2....2..4..6
..2..6..5....1..6..1....5..1..1....1..5..2....2..4..6....4..3..4....6..1..4
..6..6..1....3..6..3....5..2..0....6..6..6....4..4..5....0..3..4....6..6..1
CROSSREFS
Sequence in context: A222459 A145251 A202991 * A013741 A178190 A319941
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 28 2011
STATUS
approved