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A232226
a(n) = number of crossing connected diagrams in a disk having n crossings.
2
1, 8, 83, 911, 10657, 129651, 1625757
OFFSET
1,2
LINKS
V. Pilaud and J. Rué, Analytic combinatorics of chord and hyperchord diagrams with k crossings, arXiv preprint arXiv:1307.6440 [math.CO], 2013.
CROSSREFS
Row sums of A232225 and A232227.
Sequence in context: A196715 A179980 A236671 * A238811 A307829 A039939
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 22 2013
STATUS
approved