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A235558 Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise 1

%I

%S 23024,2481481,269127070,24006644081,1779283912244,111365596706324,

%T 6085624918209802,295666879948724250,13027131423053574349,

%U 526620669534920057107,19765434730013023379418,694125830476673627265551

%N Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise

%C Column 3 of A235559

%H R. H. Hardin, <a href="/A235558/b235558.txt">Table of n, a(n) for n = 1..38</a>

%e Some solutions for n=1

%e ..0..1..2..1....2..3..3..2....0..3..1..0....3..3..2..3....3..0..0..2

%e ..1..1..2..1....0..2..1..3....3..0..2..0....3..2..1..0....1..2..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 12 2014

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Last modified June 25 19:25 EDT 2022. Contains 354851 sequences. (Running on oeis4.)