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%I #13 Oct 20 2017 17:18:52
%S 1,2,26,854,52938,5317342,788783482,162272284974,44237669097482,
%T 15439822086531614,6715538352190953498,3561963935537880874894,
%U 2263250481436117389497386,1697243825672918269588268286,1483337827671250048404238399034,1494549066141865576239455292770414
%N Number of linear chord diagrams having 2n chords and minimal chord length n.
%F a(n) = A293881(2n,n).
%Y Cf. A293881.
%K nonn
%O 0,2
%A _Alois P. Heinz_, Oct 18 2017