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A185804 Number of (n+1)X7 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace 0
1567936, 2091689856, 1501824774848, 1288126250997184, 1064219916625097376 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A185807

LINKS

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

EXAMPLE

Some solutions for 3X7

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

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

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

CROSSREFS

Sequence in context: A250517 A151620 A186920 * A252881 A183669 A234830

Adjacent sequences:  A185801 A185802 A185803 * A185805 A185806 A185807

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 04 2011

STATUS

approved

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Last modified June 29 21:48 EDT 2022. Contains 354913 sequences. (Running on oeis4.)