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A255784 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0 1
90, 270, 1050, 5240, 43838, 597517, 10902535, 269859998, 9457603649, 445467783893, 28246525232387, 2468916391423971, 294108187486101498, 47388808850139510459, 10427427542156971913615, 3130608690589739846073241 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A255792

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Cf. A255792

Sequence in context: A074213 A231961 A237131 * A250877 A250878 A027621

Adjacent sequences:  A255781 A255782 A255783 * A255785 A255786 A255787

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 06 2015

STATUS

approved

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Last modified October 20 10:00 EDT 2020. Contains 337900 sequences. (Running on oeis4.)