A162039 - OEIS

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A162039

Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 5 ones in any row

%I #4 Dec 18 2015 18:17:21

%S 2,5,17,86,698,8853,157014,3797408,115090450,4234205332,185001672488,

%T 9420876404098,550756524966710

%N Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 5 ones in any row

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 25 2009