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A213415 Half the number of nX5 binary arrays with no 3X3 submatrix formed with any three rows and columns equal to J-I 0
16, 512, 15109, 407498, 10142461, 235950302, 5190742489, 109049720858, 2205335209381, 43210168246742, 824573050113169, 15390308248104818 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A213418

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=4

..1..0..0..0..0....1..0..1..0..1....0..1..0..0..1....1..1..1..1..0

..1..1..0..1..0....1..1..1..1..1....1..0..1..0..1....0..0..0..1..0

..1..1..1..1..1....1..1..1..1..1....0..1..1..0..1....0..0..1..0..0

..1..1..1..0..1....1..1..1..1..1....1..1..1..0..1....0..0..1..1..0

CROSSREFS

Sequence in context: A317522 A299651 A300205 * A303418 A301404 A303424

Adjacent sequences:  A213412 A213413 A213414 * A213416 A213417 A213418

KEYWORD

nonn

AUTHOR

R. H. Hardin and N. J. A. Sloane Jun 10 2012

STATUS

approved

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Last modified August 3 06:43 EDT 2021. Contains 346435 sequences. (Running on oeis4.)