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A241431
Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4
1
7, 21, 74, 515, 1527, 5304, 20690, 61348, 257119, 920918, 3090540, 12030044, 40508800, 149637207, 549347596, 1879652737, 7032173983, 24856568624, 88496458840, 325227255990, 1142461364583, 4148471540343, 14938347230115
OFFSET
1,1
COMMENTS
Column 4 of A241435
LINKS
EXAMPLE
Some solutions for n=4
..2..2..3..2....2..2..3..2....2..2..3..2....2..2..3..2....2..2..2..2
..2..1..1..0....2..1..1..2....2..1..1..0....2..1..1..0....2..1..1..0
..3..3..2..2....3..1..0..0....3..1..2..2....3..1..2..0....3..1..2..0
..2..0..0..2....3..2..0..0....3..2..1..2....2..0..2..2....2..0..0..2
CROSSREFS
Sequence in context: A135576 A153497 A146247 * A147003 A110683 A092785
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 22 2014
STATUS
approved