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A183825 1/256 the number of (n+1)X7 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 0
759375, 6954559893, 62851591581012, 570213177028325955, 5167876666358771202411 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A183827

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions with upper left block zero for 3X7

..0..0..2..0..0..0..3....0..0..0..0..1..0..0....0..0..0..0..1..0..2

..0..0..2..2..0..0..0....0..0..3..2..0..0..1....0..0..1..2..0..0..1

..2..0..1..0..1..0..0....2..0..1..0..2..0..2....1..0..3..0..3..0..0

CROSSREFS

Sequence in context: A172885 A306959 A137468 * A254074 A014889 A014888

Adjacent sequences:  A183822 A183823 A183824 * A183826 A183827 A183828

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 2011

STATUS

approved

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Last modified June 29 09:16 EDT 2022. Contains 354910 sequences. (Running on oeis4.)