%I #4 Dec 18 2015 18:17:22
%S 7,777,2066505,150943642765,337176110123479647,
%T 24982715242286897029686383
%N Number of n X n 0..6 arrays with rows and columns, considered as 7-ary numbers, in nondecreasing order
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009
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