A022490 An upper bound for linearized chord diagrams.

1, 2, 3, 6, 11, 29, 90, 447, 2777, 21492, 189275, 1875602, 20491475, 244801738, 3171481173, 44283667569, 662856700938, 10587645550783, 179737770922111, 3231504327224830

Offset

1,2

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. [broken link] [DOI]

Crossrefs

Cf. A022492.

Sequence in context: A356715 A324768 A086209 * A102952 A369223 A065653

Adjacent sequences: A022487 A022488 A022489 * A022491 A022492 A022493

Keyword

nonn

Author

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

Status

approved