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#11 by Michel Marcus at Sat Jul 21 04:22:39 EDT 2018
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#10 by Joerg Arndt at Sat Jul 21 04:10:03 EDT 2018
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#9 by Jean-François Alcover at Sat Jul 21 03:55:43 EDT 2018
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#8 by Jean-François Alcover at Sat Jul 21 03:55:39 EDT 2018
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| MATHEMATICA
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F[x_] = (Hypergeometric2F1[-1/2, -1/2, 1, 16x] - 1)/(4x);
A[x_] = x/InverseSeries[x F[x] + O[x]^21, x];
CoefficientList[A[x], x] (* Jean-François Alcover, Jul 21 2018, from 2nd formula *)
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| STATUS
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approved
editing
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#7 by Bruno Berselli at Tue Jul 08 16:57:50 EDT 2014
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#6 by Michel Marcus at Tue Jul 08 13:28:51 EDT 2014
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#5 by Joerg Arndt at Tue Jul 08 13:12:43 EDT 2014
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#4 by Joerg Arndt at Tue Jul 08 05:25:33 EDT 2014
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| COMMENTS
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Number of b^* n-strand braids of length at most 2, see the Biane/Dehornoy reference. - Joerg Arndt, Jul 08 2014
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#3 by Joerg Arndt at Tue Jul 08 05:17:25 EDT 2014
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| LINKS
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Philippe Biane, Patrick Dehornoy, <a href="http://arxiv.org/abs/1407.1604">Dual Garside structure of braids and free cumulants of products</a>, arXiv:1407.1604 [math.CO], (7-July-2014)
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| STATUS
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approved
editing
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#2 by Russ Cox at Fri Mar 30 18:37:20 EDT 2012
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| CROSSREFS
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Cf. A168450 (variant). [From _Paul D. Hanna (pauldhanna(AT)juno.com), _, Nov 29 2009]
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| AUTHOR
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_Paul D. Hanna (pauldhanna(AT)juno.com), _, Nov 23 2009
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| EXTENSIONS
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Typo in formula corrected by _Paul D. Hanna (pauldhanna(AT)juno.com), _, Nov 24 2009
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Discussion
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| Fri Mar 30
| 18:37
| OEIS Server: https://oeis.org/edit/global/213
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