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 A235672 Number of (n+1)X(n+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 0
 16, 380, 28584, 6894210, 5376199876, 13578805464958, 111141360154581108, 2948319928633417670416, 253497281472306754538416318, 70644048705639953560633398930712 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A235679 LINKS EXAMPLE Some solutions for n=3 ..1..1..0..1....1..0..0..1....0..0..1..0....0..0..0..1....0..1..1..0 ..0..0..0..0....0..0..1..1....1..0..1..0....1..0..1..0....0..0..1..0 ..1..0..1..0....1..0..1..0....1..0..0..0....1..1..0..1....0..1..0..1 ..1..0..0..0....0..1..0..0....1..1..1..0....0..0..1..0....0..1..1..0 CROSSREFS Sequence in context: A264073 A333581 A201617 * A235729 A189766 A235442 Adjacent sequences:  A235669 A235670 A235671 * A235673 A235674 A235675 KEYWORD nonn AUTHOR R. H. Hardin, Jan 13 2014 STATUS approved

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Last modified September 19 21:11 EDT 2021. Contains 347564 sequences. (Running on oeis4.)