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A252159 Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7 0
2581, 1930, 2264, 9058, 90638, 1007913, 13087197, 433466577, 10924924975, 323391798040, 35279164500443, 1921851255032605, 127953336003292258 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A252167
LINKS
EXAMPLE
Some solutions for n=4
..3..1..3..0..3..1....3..0..1..3..3..1....0..3..1..0..3..1....3..2..2..3..2..2
..0..3..0..3..0..3....2..2..3..2..2..0....2..2..3..2..2..0....0..2..2..3..2..2
..3..0..3..0..3..0....2..2..3..2..2..3....2..2..3..2..2..3....1..3..3..1..3..0
..0..3..0..3..0..3....0..3..1..3..0..1....3..3..1..3..3..1....3..2..2..3..2..2
..3..0..3..0..3..1....2..2..0..2..2..3....2..2..0..2..2..3....3..2..2..3..2..2
..1..3..0..3..1..2....2..2..3..2..2..3....2..2..3..2..2..0....1..3..0..1..3..3
CROSSREFS
Sequence in context: A303400 A235094 A171257 * A252167 A252160 A236425
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2014
STATUS
approved

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Last modified March 19 06:32 EDT 2024. Contains 370953 sequences. (Running on oeis4.)