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A256809 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 0 or 1 and no column sum 0 or 1 1
12707, 203129, 3375943, 53254665, 845074953, 13512239171, 215464267564, 3432996430917, 54734222100688, 872697161884847, 13912483854824538, 221795217415897043, 3536009069533019771, 56372932016438815229 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A256810

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Cf. A256810

Sequence in context: A083602 A105655 A124411 * A205939 A278585 A288355

Adjacent sequences:  A256806 A256807 A256808 * A256810 A256811 A256812

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 10 2015

STATUS

approved

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Last modified January 27 16:41 EST 2022. Contains 350611 sequences. (Running on oeis4.)