A252129 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 4 6 or 7

17053, 218388, 2216594, 5921321, 82061030, 913218432, 2318294384, 33845245598, 390491860658, 960716888512, 14482932238518, 169880716065096, 411723934313980, 6301725102496142, 74470734977582560, 179261000061873912

Offset

1,1

Comments

Column 7 of A252130

Links

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

Example

Some solutions for n=1
..3..0..2..3..3..2..3..0..2....2..2..1..2..2..1..2..2..1
..3..0..2..3..3..2..3..0..2....0..3..2..3..3..2..0..0..2
..2..2..1..2..2..1..2..2..1....0..0..2..0..0..2..3..3..2

Crossrefs

Sequence in context: A265927 A252647 A332100 * A252472 A233618 A233619

Adjacent sequences: A252126 A252127 A252128 * A252130 A252131 A252132

Keyword

nonn

Author

R. H. Hardin, Dec 14 2014

Status

approved