A223778 - OEIS

%I #5 Mar 27 2013 06:07:33

%S 7,53,330,1809,8940,41257,180670,756800,3066706,12093628,46563397,

%T 175879412,653526033,2392564820,8651185991,30941217363,109551653219,

%U 384528798543,1339204256650,4630162104037,15905909415604,54322204287215

%N Number of nX3 0..1 arrays with row sums unimodal and column sums inverted unimodal

%C Column 3 of A223782

%H R. H. Hardin, <a href="/A223778/b223778.txt">Table of n, a(n) for n = 1..116</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 27 2013