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 A203535 Number of n X n 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1 0
 0, 4, 72, 3364, 1700580, 3743237124, 44312000955508, 2752746090434507556, 840982281825673724760300, 1273642755637661083775996170564 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A203542 LINKS EXAMPLE Some solutions for n=5 ..0..1..2..0..1....1..1..0..0..0....2..1..0..0..2....0..0..1..0..1 ..0..1..2..0..1....0..2..2..1..1....0..1..2..1..1....1..1..1..0..1 ..2..1..2..0..2....0..2..1..0..1....0..1..1..2..0....1..0..1..0..0 ..1..0..0..1..0....1..1..1..0..0....1..2..0..2..0....0..0..1..0..1 ..1..0..1..1..0....1..0..0..1..1....1..0..0..1..1....2..1..1..0..1 CROSSREFS Sequence in context: A327882 A003718 A012947 * A013066 A013102 A224900 Adjacent sequences:  A203532 A203533 A203534 * A203536 A203537 A203538 KEYWORD nonn AUTHOR R. H. Hardin Jan 02 2012 STATUS approved

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Last modified May 17 08:05 EDT 2022. Contains 353741 sequences. (Running on oeis4.)