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 A283685 Number of nXn 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors. 0
 2, 16, 264, 15226, 2530461, 1119189256, 1496646288297, 5725555721739395, 62058786307229208212, 1952915013418224842868823, 176329484983538571638638096503 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A283691. LINKS EXAMPLE Some solutions for n=4 ..1..0..1..0. .1..0..0..0. .0..0..0..1. .1..1..0..0. .0..0..1..0 ..1..0..0..1. .0..1..0..1. .0..1..0..0. .1..1..0..0. .0..1..0..1 ..0..0..0..0. .0..0..0..1. .0..0..0..1. .0..0..0..1. .0..1..0..1 ..1..0..1..0. .0..0..1..1. .0..0..0..0. .0..0..1..0. .1..0..0..0 CROSSREFS Cf. A283691. Sequence in context: A090305 A246739 A304317 * A197458 A050974 A012188 Adjacent sequences:  A283682 A283683 A283684 * A283686 A283687 A283688 KEYWORD nonn AUTHOR R. H. Hardin, Mar 14 2017 STATUS approved

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Last modified November 13 19:25 EST 2018. Contains 317149 sequences. (Running on oeis4.)