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A235740 Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1

%I #4 Jan 15 2014 07:30:52

%S 26088,2423417,216691834,17653658980,1402427258099,106304515215910,

%T 7914658615624380,575146083513956152,41307358215548144931,

%U 2929605081026887014590,206340733128667590576464

%N Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

%C Column 4 of A235742

%H R. H. Hardin, <a href="/A235740/b235740.txt">Table of n, a(n) for n = 1..168</a>

%e Some solutions for n=1

%e ..0..0..1..0..1....1..0..1..2..0....1..1..0..2..2....0..0..2..1..2

%e ..1..0..0..2..2....0..0..0..1..2....0..1..0..2..0....2..1..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2014

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)