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 A235830 Number of (n+1)X(3+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
 3459, 112146, 3294824, 87276535, 2183863895, 51823058334, 1185755777410, 26334832022372, 572263357672413, 12229158329776181, 258153994196342883, 5400693894523672170, 112258618931005108819, 2322750011465102542819 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A235833 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=2 ..2..0..2..1....2..1..1..2....0..2..2..0....2..0..1..2....2..2..1..0 ..1..2..2..0....0..0..1..0....0..0..0..2....1..0..2..2....1..1..0..2 ..1..1..2..2....0..2..1..1....0..2..1..1....2..1..1..2....2..1..1..1 CROSSREFS Sequence in context: A082242 A321866 A235835 * A235586 A252967 A252959 Adjacent sequences:  A235827 A235828 A235829 * A235831 A235832 A235833 KEYWORD nonn AUTHOR R. H. Hardin, Jan 16 2014 STATUS approved

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Last modified December 3 20:35 EST 2020. Contains 338920 sequences. (Running on oeis4.)