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A058802
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Vertically decomposable lattices on n unlabeled nodes.
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0
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1, 1, 3, 8, 26, 96, 414, 2040, 11432, 72022, 503973, 3875329, 32429747, 292872455, 2834089224, 29209213572, 318979706486
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OFFSET
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3,3
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LINKS
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J. Heitzig and J. Reinhold, Counting finite lattices, preprint no. 298, Institut für Mathematik, Universität Hanover, Germany, 1999.
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FORMULA
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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STATUS
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approved
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