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A229800 Number of 7X7 0..n arrays with rows and columns in lexicographically nondecreasing order.

%I A229800 #5 Jul 23 2025 05:47:45
%S A229800 836488618,132171590850720635,122233352821430587249163,
%T A229800 5614157616366023545393324521,37429493951522536724740382711237,
%U A229800 65195331584280599878464161050608017
%N A229800 Number of 7X7 0..n arrays with rows and columns in lexicographically nondecreasing order.
%C A229800 Row 7 of A229794
%e A229800 Some solutions for n=1
%e A229800 ..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
%e A229800 ..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0
%e A229800 ..0..0..0..0..0..0..0....0..0..0..0..0..0..1....0..0..0..0..0..0..1
%e A229800 ..0..0..0..0..0..1..1....0..0..0..0..1..1..0....0..0..0..0..0..0..1
%e A229800 ..0..0..1..1..1..0..0....0..0..0..0..1..1..0....0..0..0..1..1..1..1
%e A229800 ..0..1..0..0..1..1..1....0..0..0..1..0..1..0....0..1..1..0..1..1..1
%e A229800 ..1..0..0..0..1..0..0....1..1..1..0..1..1..1....1..0..0..0..0..0..1
%K A229800 nonn
%O A229800 1,1
%A A229800 _R. H. Hardin_, Sep 29 2013