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Search: id:A027406
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| A027406 |
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Number of labeled servers of dimension 19. |
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+0
1
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| 1, 19, 532, 18544, 758974, 35337226, 1833202384, 104409838312, 6456768305884, 429818796312724, 30587559391254736, 2313781261593170464, 185160727825248627112, 15612253234853491025464
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OFFSET
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0,2
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REFERENCES
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R. Donaghey, Binomial self-inverse sequences and tangent coefficients, J. Combin. Theory, Series A, 21 (1976), 155-163.
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FORMULA
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E.g.f.: Exp[ Sum[ ((1+x)^i-1)/i, {i, 1, 19} ] ]
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CROSSREFS
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Sequence in context: A093975 A009081 A057644 this_sequence A053116 A035278 A092611
Adjacent sequences: A027403 A027404 A027405 this_sequence A027407 A027408 A027409
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KEYWORD
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nonn
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AUTHOR
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Olivier Gerard (ogerard(AT)ext.jussieu.fr)
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