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A203396
Number of nX7 0..3 arrays with every nonzero element less than or equal to some NW, E or S neighbor
1
1, 661595, 4711784187, 14710444493905, 45159146324783578, 154961643794311169996, 535800823449864962697227, 1822334263711036605145936237, 6186928248710299499016512591407
OFFSET
1,2
COMMENTS
Column 7 of A203397
LINKS
EXAMPLE
Some solutions for n=4
..3..0..3..1..1..3..2....2..1..3..2..0..0..3....1..3..0..0..1..3..2
..3..1..3..0..3..3..3....2..2..3..2..1..0..3....2..3..2..2..1..3..2
..3..0..3..2..1..3..2....0..0..3..2..2..3..3....1..3..2..2..1..3..0
..3..3..3..3..0..1..2....2..2..3..3..1..2..3....3..3..3..1..1..3..3
CROSSREFS
Sequence in context: A254495 A254488 A253860 * A234688 A235210 A209596
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 01 2012
STATUS
approved