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Search: id:A027393
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| A027393 |
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Number of labeled servers of dimension 6. |
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+0
1
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| 1, 6, 51, 526, 6261, 83670, 1232335, 19742190, 340632825, 6281417350, 123031916475, 2546554829550, 55463580338125, 1266494279875350, 30225798507297975, 751874518736980750, 19447447965603896625
(list; graph; listen)
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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[ (x*(360 + 450*x + 400*x^2 + 225*x^3 + 72*x^4 + 10*x^5))/60 ]
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CROSSREFS
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Sequence in context: A050916 A011790 A002295 this_sequence A124565 A057817 A000405
Adjacent sequences: A027390 A027391 A027392 this_sequence A027394 A027395 A027396
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KEYWORD
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nonn
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AUTHOR
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Olivier Gerard (olivier.gerard(AT)gmail.com)
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