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A205767
Number of (n+1)X8 0..3 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors
1
26672819, 23044169753, 20808476912916, 18792440902201504, 16933907492912073872, 15245666610881157061902, 13716254602126712440880420, 12336975902231287097446944284, 11094395430478243340473622599662
OFFSET
1,1
COMMENTS
Column 7 of A205768
LINKS
EXAMPLE
Some solutions for 5X5
..3..1..2..3..2..2..0..1....3..2..3..0..3..3..0..1....1..1..1..0..2..3..3..0
..1..2..1..1..0..3..1..0....1..3..0..2..1..0..2..0....1..2..1..2..2..2..3..3
..0..1..3..2..1..0..2..1....2..0..2..1..3..1..3..2....2..2..2..2..3..2..2..3
..1..2..0..3..2..1..3..2....2..1..0..2..0..2..1..3....1..2..0..2..2..2..3..3
..3..0..2..1..3..2..0..3....3..2..1..3..1..3..2..0....2..2..2..2..1..2..2..3
CROSSREFS
Sequence in context: A120410 A246225 A151622 * A086129 A121109 A046518
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 30 2012
STATUS
approved