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A068384
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a(n) is the smallest number m such that any lattice having at least m elements must have a sublattice with exactly n elements.
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0
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OFFSET
| 1,2
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COMMENTS
| a(9) >= 17. For n >= 10, a(n) >= n + 2. a(n) <= n^(3n) for all n.
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REFERENCES
| G. Gratzer, General Lattice Theory. Birkhauser, Basel, 1998, 2nd edition, p. 72.
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CROSSREFS
| Sequence in context: A174349 A099004 A055170 * A005940 A005941 A075164
Adjacent sequences: A068381 A068382 A068383 * A068385 A068386 A068387
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KEYWORD
| hard,more,nonn,nice
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AUTHOR
| David Wasserman (dwasserm(AT)earthlink.net), Mar 05 2002
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