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 A235442 Number of (n+1)X(n+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise 0
 16, 382, 28962, 7017768, 5485253042, 13868068262164, 113555975474406500, 3012872125570872924612 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A235449 LINKS EXAMPLE Some solutions for n=3 ..1..1..0..1....0..1..0..1....0..0..1..1....0..0..1..1....1..1..1..1 ..1..1..0..1....1..0..1..0....0..0..1..0....0..1..0..1....0..0..1..0 ..1..0..0..1....0..1..0..1....0..0..1..1....1..1..1..0....1..1..1..0 ..1..1..1..0....1..1..1..1....1..1..1..0....0..0..0..1....0..1..0..1 CROSSREFS Sequence in context: A235672 A235729 A189766 * A343213 A340689 A302262 Adjacent sequences:  A235439 A235440 A235441 * A235443 A235444 A235445 KEYWORD nonn AUTHOR R. H. Hardin, Jan 10 2014 STATUS approved

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Last modified July 23 11:34 EDT 2021. Contains 346259 sequences. (Running on oeis4.)