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Search: id:A058805
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A058805 Number of labeled vertically indecomposable lattices with a fixed top and bottom. +0
3
1, 1, 1, 0, 1, 7, 97, 1981, 56611, 2151857, 104905809, 6375234313, 472007532691, 41778412444165, 4351370158008721, 526176012328671173, 73022861716667028531, 11515387009980686269561 (list; graph; listen)
OFFSET

0,6

CROSSREFS

a(n)=A058803(n)/(n*(n-1))=A058804(n)/(n-1).

Adjacent sequences: A058802 A058803 A058804 this_sequence A058806 A058807 A058808

Sequence in context: A011943 A083083 A022007 this_sequence A132061 A003710 A027837

KEYWORD

nonn,hard

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Dec 28 2000

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


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