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A255141 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 1 and no column sum 1 0
47, 371, 6271, 190731, 10864279, 1141237349, 215697143322, 73492753345771, 45252431432900378, 50274563122404978583, 100732007486237755775772, 364115407117554783582241759 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A255149
LINKS
Table of n, a(n) for n=1..12.
EXAMPLE
Some solutions for n=4
..1..1..1..0..1..1....1..0..1..1..1..0....1..0..1..1..0..1....1..1..1..0..1..1
..1..1..0..1..1..1....1..1..1..1..1..1....1..1..1..0..1..1....0..1..1..1..0..1
..1..1..1..1..0..1....1..1..1..0..1..1....1..1..1..1..1..1....1..1..0..1..1..1
..1..1..1..1..1..1....1..1..1..1..1..1....1..0..1..1..0..1....1..1..1..1..1..1
..1..1..1..1..1..0....1..0..1..1..1..0....0..1..1..1..1..0....1..1..1..0..1..1
..1..1..1..1..0..1....1..1..1..1..0..1....1..1..1..0..1..1....1..0..1..1..0..1
CROSSREFS
Cf. A255149
Sequence in context: A219442 A055828 A244770 * A142694 A213216 A324625
Adjacent sequences: A255138 A255139 A255140 * A255142 A255143 A255144
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 15 2015
STATUS
approved

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Last modified September 8 16:32 EDT 2024. Contains 375753 sequences. (Running on oeis4.)