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 A236516 Number of (n+1)X(n+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 0
 16, 264, 9212, 655460, 99655626, 31459840764, 21144229954815, 29928295205526111, 90406983382500912004 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A236523 LINKS EXAMPLE Some solutions for n=3 ..1..1..1..1....0..1..1..0....1..0..0..0....1..1..0..0....0..1..1..1 ..0..0..0..1....1..0..0..1....1..1..1..1....1..0..1..1....0..0..1..0 ..0..0..0..0....0..0..0..0....0..1..0..1....0..0..0..1....1..0..1..1 ..0..0..1..0....0..1..0..1....0..0..0..1....0..0..1..1....0..0..0..1 CROSSREFS Sequence in context: A240633 A068770 A113359 * A187453 A333903 A218062 Adjacent sequences:  A236513 A236514 A236515 * A236517 A236518 A236519 KEYWORD nonn AUTHOR R. H. Hardin, Jan 27 2014 STATUS approved

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Last modified January 25 08:59 EST 2021. Contains 340416 sequences. (Running on oeis4.)