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A255076 Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum one 1
676, 2704, 14161, 66049, 309136, 1485961, 7070281, 33686416, 161417025, 772006225, 3690562500, 17654436900, 84443710464, 403869147049, 1931769194161, 9239867281225, 44194454747881, 211385283419025, 1011072102969600 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A255082

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Cf. A255082

Sequence in context: A300984 A185794 A253330 * A253323 A281405 A204036

Adjacent sequences:  A255073 A255074 A255075 * A255077 A255078 A255079

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 14 2015

STATUS

approved

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Last modified September 21 01:46 EDT 2021. Contains 347596 sequences. (Running on oeis4.)