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 A235780 Number of (n+1)X(2+1) 0..2 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
 537, 7331, 86369, 924323, 9324103, 89825051, 837434835, 7600810347, 67576585873, 590517097897, 5088604106025, 43333394608177, 365389038431349, 3055042605688809, 25360445057238525, 209221159123361171 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A235784 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 59 FORMULA Empirical recurrence of order 59 (see link above) EXAMPLE Some solutions for n=3 ..2..0..2....0..1..1....2..2..0....1..1..1....1..2..0....1..0..0....2..2..2 ..1..2..1....1..1..0....1..2..2....1..2..2....1..0..1....0..2..2....0..1..0 ..0..0..2....2..1..2....2..2..2....2..2..2....0..0..0....1..1..1....0..2..2 ..0..2..0....1..0..1....2..0..2....1..2..2....1..0..1....2..1..0....2..2..0 CROSSREFS Sequence in context: A236879 A206067 A183725 * A235785 A235561 A252339 Adjacent sequences: A235777 A235778 A235779 * A235781 A235782 A235783 KEYWORD nonn AUTHOR R. H. Hardin, Jan 15 2014 STATUS approved

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Last modified May 24 16:32 EDT 2024. Contains 372781 sequences. (Running on oeis4.)