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A240324
Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4
1
6, 37, 455, 3374, 21455, 189549, 1190246, 8903613, 70945972, 460466581, 3565876476, 26437586127, 180411185989, 1394924206374, 9999389423346, 71022206087648, 538759260350717, 3826996325512698, 27847080935840982
OFFSET
1,1
COMMENTS
Column 4 of A240327
LINKS
EXAMPLE
Some solutions for n=4
..3..2..3..3....3..2..2..2....2..3..3..2....2..3..2..2....3..2..3..3
..2..3..2..2....2..1..1..1....3..1..1..3....3..1..3..1....2..1..2..2
..3..0..0..2....3..0..0..2....3..2..3..2....3..1..2..1....3..0..0..0
..3..2..2..2....2..1..1..3....2..1..1..1....3..2..0..3....2..1..0..0
CROSSREFS
Sequence in context: A185036 A185236 A041062 * A283636 A211988 A285934
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 03 2014
STATUS
approved