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A252033 Number of (n+2)X(1+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime 1
10991, 31774, 53776, 112929, 327823, 1080979, 2183207, 5486634, 16631787, 51672060, 114374144, 303612703, 922940376, 2704035839, 6383581782, 17609747682, 52579573030, 148181650270, 369603880321, 1038233037114 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 1 of A252039
LINKS
EXAMPLE
Some solutions for n=4
..0..0..4....2..2..2....0..4..0....1..0..3....4..2..0....0..0..0....3..0..1
..4..1..4....3..4..3....3..4..3....0..2..2....4..1..4....3..2..3....1..4..4
..2..0..2....1..2..1....1..4..3....0..4..4....1..3..0....1..4..1....0..0..4
..3..0..3....0..4..0....0..0..4....1..4..3....4..4..4....0..4..0....3..0..1
..1..4..3....0..4..0....0..0..1....3..4..1....1..3..2....0..1..0....3..4..3
..4..0..4....1..2..1....1..0..3....4..4..2....4..2..4....1..3..4....2..2..4
CROSSREFS
Sequence in context: A335082 A104323 A252039 * A352751 A266983 A227865
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 12 2014
STATUS
approved

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Last modified May 21 17:21 EDT 2024. Contains 372738 sequences. (Running on oeis4.)