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A183808 1/16 the number of (n+1)X7 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 1
243, 4341, 70044, 1232595, 20745787, 360549804, 6153770375, 106324742825, 1823862776230, 31435034643715, 540242027044863, 9301932692926094, 159977961165737219, 2753396085474939071, 47367137650822979126 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A183811
LINKS
EXAMPLE
Some solutions with upper left block zero for 3X7
..0..0..1..0..0..1..0....0..0..0..1..0..0..1....0..0..1..1..1..0..0
..0..0..1..1..1..0..0....0..0..1..1..0..1..1....0..0..1..0..0..0..1
..1..0..0..0..1..1..1....1..1..0..0..0..1..1....1..1..0..0..1..1..1
CROSSREFS
Sequence in context: A029700 A224003 A232027 * A231913 A223280 A224356
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved

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Last modified April 21 17:07 EDT 2024. Contains 371874 sequences. (Running on oeis4.)