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A236426 Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise 1

%I

%S 12373,544380,24143945,987221751,38520605664,1385464957395,

%T 46895371359150,1481853762527918,44250443243011112,

%U 1248360171584853050,33527011369578729307,858472994569245436699,21068648545060095499439

%N Number of (n+1)X(4+1) 0..2 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

%C Column 4 of A236427

%H R. H. Hardin, <a href="/A236426/b236426.txt">Table of n, a(n) for n = 1..29</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 25 2014

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Last modified September 30 14:38 EDT 2022. Contains 357106 sequences. (Running on oeis4.)