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A218080
Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..1 nX4 array
1
6, 18, 78, 342, 1508, 6606, 29136, 128220, 564548, 2485936, 10945378, 48194280, 212204122, 934356836, 4114075516, 18114710104, 79761011640, 351196268466, 1546354739056, 6808765412512, 29979722654490, 132003926897010
OFFSET
1,1
COMMENTS
Column 4 of A218084
LINKS
FORMULA
Empirical: a(n) = 3*a(n-1) +9*a(n-2) -4*a(n-3) -37*a(n-4) -13*a(n-5) +48*a(n-6) +39*a(n-7) -25*a(n-8) -18*a(n-9) -6*a(n-10) -3*a(n-11) -5*a(n-12) +4*a(n-13)
EXAMPLE
Some solutions for n=3
..1..0..0..0....0..0..1..1....0..0..1..1....1..1..0..0....0..0..1..1
..1..0..0..0....0..0..1..0....0..0..0..0....0..0..0..0....0..0..0..1
..1..1..0..0....0..1..0..0....0..0..0..0....0..0..0..0....0..0..0..1
CROSSREFS
Sequence in context: A318069 A332939 A299412 * A277609 A188119 A239420
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 20 2012
STATUS
approved