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Number of 6X6 0..n arrays with rows and columns in lexicographically nondecreasing order
1

%I #4 Sep 29 2013 18:58:38

%S 2625117,2533164987353,60704077222861152,161327438675038562165,

%T 103937249022030445057526,24982715242286897029686383,

%U 2907883712766278818772179090,194172351727597419593410162517

%N Number of 6X6 0..n arrays with rows and columns in lexicographically nondecreasing order

%C Row 6 of A229794

%H R. H. Hardin, <a href="/A229799/b229799.txt">Table of n, a(n) for n = 1..9</a>

%e Some solutions for n=1

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 29 2013