login
A290688
Number of linear chord diagrams having 2n chords and minimal chord length n.
1
1, 2, 26, 854, 52938, 5317342, 788783482, 162272284974, 44237669097482, 15439822086531614, 6715538352190953498, 3561963935537880874894, 2263250481436117389497386, 1697243825672918269588268286, 1483337827671250048404238399034, 1494549066141865576239455292770414
OFFSET
0,2
FORMULA
a(n) = A293881(2n,n).
CROSSREFS
Cf. A293881.
Sequence in context: A354244 A059516 A210672 * A173103 A002704 A015215
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 18 2017
STATUS
approved