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Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 9 ones in any row
0

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

%S 2,5,17,86,698,9551,226592,9471845,705154187,93580638024,

%T 21617123994739,8359355039654246,5068693922149271436

%N Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 9 ones in any row

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 25 2009