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A185531 Number of (n+2)X8 binary arrays with each 3X3 subblock nonsingular 1
219606, 5221098, 120202866, 2662736508, 60674682444, 1376360631638, 31056846439654, 703501386832854, 15929983279906354, 360373150531607944, 8156890014917199048, 184637748007156575022, 4178612067273729478560 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A185534
LINKS
EXAMPLE
Some solutions for 4X8
..0..0..1..1..0..1..0..1....0..0..1..0..0..1..1..0....0..0..1..1..0..1..0..1
..0..1..1..0..0..1..1..1....0..1..0..1..0..0..1..0....0..1..0..1..0..0..1..0
..1..1..0..0..1..1..0..0....1..1..1..0..1..0..0..1....1..1..1..0..1..1..1..0
..0..0..1..1..1..0..0..1....0..0..1..0..0..1..1..0....0..0..1..1..0..1..1..1
CROSSREFS
Sequence in context: A072189 A187865 A201227 * A258678 A254912 A254905
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 30 2011
STATUS
approved

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Last modified April 16 16:13 EDT 2024. Contains 371749 sequences. (Running on oeis4.)