A224396 - OEIS

%I #4 Apr 05 2013 12:12:18

%S 16384,10000000,279128617,2780848289,17642791909,90682660877,

%T 424124440444,1895527656502,8186764103582,33998418651060,

%U 134714450368164,506671733476920,1805110329656189,6093246282673576,19519515186829602

%N Number of 7Xn 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing

%C Row 7 of A224391

%H R. H. Hardin, <a href="/A224396/b224396.txt">Table of n, a(n) for n = 1..23</a>

%e Some solutions for n=3

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 05 2013