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A252202
Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 1 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 1 3 4 6 or 7
1
2680, 5178, 110128, 1180226, 193004794, 78534150994, 1236950586236, 2850002858757490, 19061766897822615868, 332041393326772519346, 11522592664946008068981178, 1277874485884710320427331813954
OFFSET
1,1
COMMENTS
Diagonal of A252210
LINKS
EXAMPLE
Some solutions for n=3
..3..0..1..0..0....3..2..2..0..2....1..1..2..1..1....2..3..2..2..0
..0..3..1..0..0....1..0..0..1..3....0..3..1..0..3....0..1..3..0..1
..1..1..2..1..1....0..2..2..3..2....3..0..1..0..0....2..3..2..2..0
..0..3..1..3..3....3..2..2..3..2....1..1..2..1..1....2..3..2..2..3
..3..0..1..3..3....1..3..3..1..3....0..0..1..3..3....3..1..3..3..1
CROSSREFS
Sequence in context: A254992 A252210 A252203 * A236594 A217335 A243993
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 15 2014
STATUS
approved