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 A235561 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 rowwise and columnwise 1
 537, 8345, 113391, 1383617, 15633605, 165947729, 1680360507, 16368643767, 154629524369, 1423864504941, 12838948846501, 113734761931057, 992623171694623, 8553532264219381, 72908918920145825, 615658688491607859 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A235565 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 67 FORMULA Empirical recurrence of order 67 (see link above) EXAMPLE Some solutions for n=3 ..1..1..0....0..2..0....2..1..0....1..1..0....0..0..2....1..0..1....0..1..1 ..1..1..1....0..0..0....1..0..1....0..2..2....0..1..2....2..1..0....2..1..0 ..2..1..2....1..2..1....0..2..1....1..2..0....1..1..2....2..2..0....1..1..2 ..0..0..2....1..2..1....0..2..0....2..1..1....0..2..0....1..1..2....2..2..1 CROSSREFS Sequence in context: A183725 A235780 A235785 * A252339 A224742 A231194 Adjacent sequences: A235558 A235559 A235560 * A235562 A235563 A235564 KEYWORD nonn AUTHOR R. H. Hardin, Jan 12 2014 STATUS approved

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Last modified February 23 08:25 EST 2024. Contains 370269 sequences. (Running on oeis4.)