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A183369 Number of n X n binary arrays with no element equal to the mod 3 sum of its diagonal and antidiagonal neighbors 0
1, 4, 6, 49, 195, 3969, 285516, 22743361, 3414837564, 1467194393284, 1549197261403648, 3156509484479021584, 11694530363878786782540, 91853775938916496321710336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A183374

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for 5X5

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

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

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

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

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

CROSSREFS

Sequence in context: A165658 A066348 A330978 * A241159 A116656 A012933

Adjacent sequences:  A183366 A183367 A183368 * A183370 A183371 A183372

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2011

STATUS

approved

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Last modified May 20 04:41 EDT 2022. Contains 353851 sequences. (Running on oeis4.)