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A099949
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Number of crossing partitions of n.
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1
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1, 5, 20, 84, 388, 1951, 10529, 60478, 367953, 2362503, 15955673, 113015123, 837307541, 6473306155, 52110629576, 435951806195, 3783475965645, 34007779661168, 316120859847935, 3034730002671251, 30048957645720682, 306529788241138211, 3217941347005747296, 34730178825735671711, 384990885899299757336, 4379518943963832643173, 51083106730348426001558
(list; graph; refs; listen; history; internal format)
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OFFSET
| 4,2
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REFERENCES
| M. Klazar, Bell numbers, their relatives and algebraic differential equations, J. Combin. Theory, A 102 (2003), 63-87.
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CROSSREFS
| Sequence in context: A056884 A006749 A002213 * A006231 A069007 A126987
Adjacent sequences: A099946 A099947 A099948 * A099950 A099951 A099952
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KEYWORD
| nonn,easy,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Nov 12 2004
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EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 11 2007
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