A180271 Number of multiplicity-free labeled floor diagrams with n nodes.

1, 1, 2, 7, 36, 245, 2081, 21231

Offset

1,3

Links

Table of n, a(n) for n=1..8.

Fomin, Mikhalkin, Labeled floor diagrams for plane curves, arXiv:0906.3828 [math.AG], 2009-2010.

Crossrefs

Sequence in context: A191493 A095793 A029768 * A380081 A167199 A007889

Adjacent sequences: A180268 A180269 A180270 * A180272 A180273 A180274

Keyword

nonn,hard,more

Author

Kevin Hu (10thsymphony(AT)gmail.com), Aug 23 2010

Status

approved