A251681 - OEIS

A251681

Number of (n+2)X(7+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4

29839, 100307, 632811, 4748285, 38111915, 310560937, 2525118941, 20534822225, 167304924269, 1363558488437, 11111887091463, 90560094584979, 738127134171193, 6016586690293155, 49042746875602219, 399756370338968651

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OFFSET

1,1

COMMENTS

Column 7 of A251682

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..179

EXAMPLE

Some solutions for n=2

..0..0..1..0..0..1..2..0..1....0..0..0..0..0..0..0..1..0

..2..1..0..0..1..2..0..1..2....0..1..0..0..0..0..0..0..0

..1..0..0..1..2..0..1..2..0....0..0..0..0..0..0..0..0..0

..0..0..1..2..0..1..2..0..1....0..0..0..0..1..0..0..0..0

CROSSREFS

Sequence in context: A157614 A209812 A258755 * A183852 A274358 A235826

Adjacent sequences: A251678 A251679 A251680 * A251682 A251683 A251684

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 06 2014

STATUS

approved