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A183810 1/16 the number of (n+1)X9 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 0
2187, 79605, 2518389, 89998565, 3023598287, 106324742825, 3645190453457, 127200605449247, 4393367308414597 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 8 of A183811
LINKS
EXAMPLE
Some solutions with upper left block zero for 3X9
..0..0..0..1..1..0..0..0..1....0..0..0..0..1..1..1..1..1
..0..0..1..1..0..1..1..0..0....0..0..1..1..1..0..0..1..1
..1..1..1..0..1..1..1..1..0....0..1..1..0..0..1..0..0..0
CROSSREFS
Sequence in context: A209509 A016759 A086874 * A224005 A210057 A232029
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved

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Last modified February 23 13:42 EST 2024. Contains 370283 sequences. (Running on oeis4.)