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Number of n X n 0..6 arrays with rows and columns, considered as 7-ary numbers, in strictly increasing order
0
%I #4 Dec 18 2015 18:17:23
%S 7,728,2010400,149722274204,336506531388308154,
%T 24971865691721319776338222
%N Number of n X n 0..6 arrays with rows and columns, considered as 7-ary numbers, in strictly increasing order
%K nonn
%O 1,1
%A _R. H. Hardin_ Jun 25 2009