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%I #3 Mar 30 2012 17:37:12
%S 1,1,1,0,1,7,97,1981,56611,2151857,104905809,6375234313,472007532691,
%T 41778412444165,4351370158008721,526176012328671173,
%U 73022861716667028531,11515387009980686269561
%N Number of labeled vertically indecomposable lattices with a fixed top and bottom.
%Y a(n)=A058803(n)/(n*(n-1))=A058804(n)/(n-1).
%K nonn,hard
%O 0,6
%A _Christian G. Bower_, Dec 28 2000
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