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A251837
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Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime
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1
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974, 508, 1803, 5860, 79817, 1226031, 6811452, 332307262, 17060512419, 115557808374, 20390744213799, 3669049306262240, 27687623355417760, 18066638677524861299, 11720523110601342578534, 93975548122075184849030
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OFFSET
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1,1
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COMMENTS
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Diagonal of A251845
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..17
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EXAMPLE
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Some solutions for n=4
..3..1..0..0..1..0....1..0..0..1..3..0....0..1..0..0..1..0....1..0..0..1..0..3
..0..1..0..3..1..0....3..3..0..1..0..0....1..2..1..1..2..1....2..1..1..2..1..1
..1..2..1..1..2..1....2..1..1..2..1..1....0..1..0..3..1..0....1..3..0..1..0..0
..0..1..0..0..1..0....1..0..3..1..0..0....0..1..0..0..1..3....1..0..0..1..0..0
..3..1..0..3..1..0....1..0..0..1..3..0....1..2..1..1..2..3....2..1..1..2..1..1
..1..2..1..1..2..1....2..1..1..2..1..1....0..1..0..0..1..0....1..0..0..1..0..0
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CROSSREFS
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Sequence in context: A209017 A232409 A275060 * A251838 A251845 A254072
Adjacent sequences: A251834 A251835 A251836 * A251838 A251839 A251840
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Dec 09 2014
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STATUS
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approved
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