%I #4 Mar 31 2012 12:37:01
%S 7157160,2204400210,592113170884,78592862286558,10058642503775705
%N Number of (n+1)X7 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards
%C Column 6 of A204309
%e Some solutions for n=4
%e ..3..3..1..3..3..0..3....2..3..1..1..2..0..1....0..3..3..3..0..0..1
%e ..0..0..3..0..3..3..3....0..0..1..2..0..3..2....3..0..0..0..3..3..2
%e ..3..3..3..3..3..3..3....2..3..1..3..2..2..0....0..3..3..3..2..3..3
%e ..2..0..3..2..3..3..3....0..1..1..2..0..3..2....2..1..1..3..3..3..3
%e ..3..3..3..3..3..3..3....2..3..2..2..3..3..1....0..3..3..3..2..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 14 2012
|