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A252647 Number of (7+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 3 4 6 or 7 1
17046, 205127, 1812508, 5124134, 62261756, 625096361, 1669555189, 21553739771, 226520460975, 581961166338, 7832386243774, 83953331283846, 211701995958291, 2906623169007695, 31416088548112253, 78576892186118045 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A252640

LINKS

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

EXAMPLE

Some solutions for n=1

..3..0..1....0..3..1....3..0..3....1..1..2....3..1..2....3..3..1....2..1..1

..1..0..3....2..1..1....3..0..1....1..0..3....2..0..2....3..2..2....3..1..0

..1..2..1....3..1..3....2..1..1....3..1..3....3..0..1....2..3..2....0..3..1

..0..3..1....0..3..1....3..1..3....1..1..2....3..2..2....0..3..1....2..1..1

..1..3..0....2..1..1....0..3..1....1..3..3....2..0..2....0..2..2....0..1..3

..1..2..1....3..1..3....2..1..1....3..1..0....3..3..1....2..3..2....0..3..1

..3..3..1....3..0..1....0..1..3....1..1..2....3..2..2....3..0..1....2..1..1

..1..3..0....2..1..1....0..3..1....1..3..3....2..3..2....0..2..2....3..1..3

..1..2..1....0..1..3....2..1..1....3..1..0....0..3..1....2..3..2....3..0..1

CROSSREFS

Sequence in context: A205232 A265972 A265927 * A252129 A252472 A233618

Adjacent sequences:  A252644 A252645 A252646 * A252648 A252649 A252650

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2014

STATUS

approved

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Last modified March 30 16:16 EDT 2020. Contains 333127 sequences. (Running on oeis4.)