A223806 - OEIS

%I #4 Mar 27 2013 08:45:12

%S 16384,268435456,400006582368,108631485025292,11005258705825234,

%T 584566278788358762,19618352087687868206,465158078382468013314,

%U 8382245182389408629393,120791502810712490663930

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

%C Row 7 of A223801

%H R. H. Hardin, <a href="/A223806/b223806.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..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 27 2013