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A187355
Number of (n+2)X4 0..3 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum
1
7776, 89150, 2103856, 39189180, 823266330, 16573583244, 341631507734, 6985467724796, 143826009869640, 2956672487001988, 60907232736607162, 1254431443692685380, 25855520829210572114, 532946404216704680566
OFFSET
1,1
COMMENTS
Column 2 of A187356
LINKS
EXAMPLE
Some solutions for 6X4
..0..2..0..2....0..0..0..2....0..0..2..0....0..0..0..2....0..2..0..2
..0..0..0..0....2..2..1..1....2..2..1..1....2..2..2..0....2..0..2..0
..0..2..0..2....0..1..0..1....1..0..1..2....0..0..0..2....1..1..1..2
..3..0..2..1....3..2..2..1....1..3..2..0....3..1..3..0....0..2..1..0
..0..3..0..1....0..1..1..2....2..0..0..0....1..1..0..3....3..0..0..1
..0..2..1..3....3..2..2..1....3..0..2..3....0..3..2..0....0..0..2..0
CROSSREFS
Sequence in context: A176375 A210116 A223509 * A190465 A064782 A016865
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 08 2011
STATUS
approved