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A251828 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not 3 or 6 and every diagonal and antidiagonal sum 3 or 6 1
413202, 3073138, 38456182, 266585018, 4235688278, 56477451898, 395032012018, 6329242225706, 84607975731406, 594794453852114, 9561704850018734, 127959128017190450, 900849501297997482, 14485002806380503874 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A251829

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..164

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A249405 A237676 A307475 * A256732 A078519 A187171

Adjacent sequences:  A251825 A251826 A251827 * A251829 A251830 A251831

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 09 2014

STATUS

approved

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Last modified December 8 12:28 EST 2021. Contains 349596 sequences. (Running on oeis4.)