%I
%S 543,2920,15246,76320,362241,1647460,7249825,31113316,131014715,
%T 543845812,2233368847,9098214240,36844025643,148553970588,
%U 597082293823,2394504059784,9587995012203,38352450171812,153311305422383
%N Number of (n+1)X(2+1) 0..3 arrays with nondecreasing x(i,j)x(i,j1) in the i direction and nondecreasing absolute value of x(i,j)x(i1,j) in the j direction
%C Column 2 of A250691
%H R. H. Hardin, <a href="/A250685/b250685.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 27*a(n1) 331*a(n2) +2439*a(n3) 12049*a(n4) +42129*a(n5) 107225*a(n6) +201069*a(n7) 277706*a(n8) +278928*a(n9) 197984*a(n10) +94032*a(n11) 26784*a(n12) +3456*a(n13) for n>17
%e Some solutions for n=4
%e ..1..1..1....2..2..0....3..2..2....3..2..1....2..2..0....2..1..0....3..0..1
%e ..1..1..2....3..3..2....3..2..2....3..3..3....3..3..2....2..3..3....3..0..1
%e ..2..2..3....2..2..3....3..2..2....3..3..3....1..1..0....2..3..3....3..0..2
%e ..0..0..1....0..0..1....3..3..3....0..0..0....0..0..2....0..1..1....3..0..2
%e ..0..1..3....0..0..1....3..3..3....2..2..3....0..0..2....1..3..3....2..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 26 2014
