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A251884 Number of (n+2)X(7+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime 1
676969, 2472269, 8113568, 64083601, 513228578, 3186483082, 27379339268, 220952120769, 1384444723597, 11996291910088, 97046849387176, 608493163905192, 5283161758946533, 42750489265921469, 268070866872601358 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A251885
LINKS
EXAMPLE
Some solutions for n=1
..0..4..3..0..4..3..4..0..3....0..0..3..4..0..1..1..0..4
..2..0..3..4..0..3..0..4..1....3..3..1..1..0..1..1..3..1
..3..1..1..1..1..1..3..3..1....0..4..3..0..2..0..3..2..0
CROSSREFS
Sequence in context: A206324 A216000 A257360 * A237005 A205244 A119404
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2014
STATUS
approved

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Last modified March 4 05:23 EST 2024. Contains 370522 sequences. (Running on oeis4.)