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 A236519 Number of (n+1)X(4+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 1
 476, 5670, 63208, 655460, 6591144, 63997604, 610630403, 5723134951, 53126385011, 488732268982, 4473422061090, 40764881225427, 370542416886458, 3361057454037610, 30450286475294399, 275604525437140015 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A236523 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 82 FORMULA Empirical recurrence of order 82 (see link above) EXAMPLE Some solutions for n=3 ..1..1..0..1..1....1..1..1..1..1....0..0..1..1..0....1..1..0..1..1 ..0..1..1..0..1....0..1..0..0..1....1..0..0..1..0....0..0..1..1..0 ..1..0..1..0..1....1..1..1..1..1....0..0..0..0..0....1..1..0..1..0 ..0..0..0..0..0....1..1..1..0..0....1..0..1..0..0....1..0..1..1..1 CROSSREFS Sequence in context: A171077 A234077 A205287 * A205895 A235656 A264290 Adjacent sequences:  A236516 A236517 A236518 * A236520 A236521 A236522 KEYWORD nonn AUTHOR R. H. Hardin, Jan 27 2014 STATUS approved

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Last modified December 2 23:09 EST 2020. Contains 338898 sequences. (Running on oeis4.)