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A183824 1/256 the number of (n+1)X6 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 0
50625, 128578815, 323115202755, 814479338538099, 2051388696859571241, 5167876666358771202411, 13018181193595377140956551 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A183827

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions with upper left block zero for 3X6

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

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

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

CROSSREFS

Sequence in context: A251486 A268469 A250442 * A013877 A241537 A233977

Adjacent sequences:  A183821 A183822 A183823 * A183825 A183826 A183827

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 2011

STATUS

approved

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Last modified June 30 19:43 EDT 2022. Contains 354945 sequences. (Running on oeis4.)