login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A022492 An upper bound for linearized chord diagrams. 1
1, 2, 4, 10, 28, 100, 421, 2101, 11953, 76121, 533780, 4077565, 33655662, 298278708, 2824175781, 28446451346, 303704165521, 3425895062137, 40716009508038, 508528878864884 (list; graph; refs; listen; history; text; internal format)
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. A022490.

Sequence in context: A188496 A191501 A085549 * A123429 A207018 A006841

Adjacent sequences:  A022489 A022490 A022491 * A022493 A022494 A022495

KEYWORD

nonn

AUTHOR

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

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 17 16:08 EST 2019. Contains 329241 sequences. (Running on oeis4.)