A022489 An upper bound for linearized chord diagrams.

0, 1, 1, 3, 5, 18, 61, 357, 2330, 18715, 167783, 1686327, 18615873, 224310263, 2926679435, 41112186396, 618573033369, 9924788849845, 169150125371328, 3051766556302719

Offset

1,4

Links

Table of n, a(n) for n=1..20.

A. Stoimenow, Enumeration of chord diagrams and an upper bound for Vassiliev invariants, J. Knot Theory Ramifications, 7 (1998), no. 1, 93-114, [DOI]

Crossrefs

Sequence in context: A196420 A199676 A303684 * A176749 A145774 A348778

Adjacent sequences: A022486 A022487 A022488 * A022490 A022491 A022492

Keyword

nonn

Author

Alexander Stoimenow (stoimeno(AT)math.toronto.edu)

Status

approved