login
A141415
Number of different virtual strings with n crossings.
0
1, 0, 0, 2, 26
OFFSET
0,4
LINKS
Andrew Gibson, On tabulating virtual strings, arXiv:0808.0064 [math.GT], 2008. See Table 2, p. 14.
Vladimir Turaev, Virtual strings and their cobordisms, arXiv:math/0311185 [math.GT], 2008-2014.
CROSSREFS
Sequence in context: A369675 A088816 A323589 * A056948 A292359 A035420
KEYWORD
nonn,hard,more
AUTHOR
Jonathan Vos Post, Aug 04 2008
STATUS
approved