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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

%I

%S 476,5670,63208,655460,6591144,63997604,610630403,5723134951,

%T 53126385011,488732268982,4473422061090,40764881225427,

%U 370542416886458,3361057454037610,30450286475294399,275604525437140015

%N 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

%C Column 4 of A236523

%H R. H. Hardin, <a href="/A236519/b236519.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A236519/a236519.txt">Empirical recurrence of order 82</a>

%F Empirical recurrence of order 82 (see link above)

%e Some solutions for n=3

%e ..1..1..0..1..1....1..1..1..1..1....0..0..1..1..0....1..1..0..1..1

%e ..0..1..1..0..1....0..1..0..0..1....1..0..0..1..0....0..0..1..1..0

%e ..1..0..1..0..1....1..1..1..1..1....0..0..0..0..0....1..1..0..1..0

%e ..0..0..0..0..0....1..1..1..0..0....1..0..1..0..0....1..0..1..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 27 2014

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Last modified January 27 05:19 EST 2021. Contains 340451 sequences. (Running on oeis4.)