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A185844 Number of (n+1)X9 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace 0
1731321, 3601102725, 3610924080057, 4197053176231149, 4780252449901079883, 5482800643934316189987 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A185845

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 3X9

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

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

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

CROSSREFS

Sequence in context: A186586 A131639 A187139 * A234130 A177695 A252589

Adjacent sequences:  A185841 A185842 A185843 * A185845 A185846 A185847

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 05 2011

STATUS

approved

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Last modified November 18 22:35 EST 2019. Contains 329305 sequences. (Running on oeis4.)