login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals nine.
2

%I #5 Feb 28 2019 14:45:53

%S 1,122,10980,651962,31844074,1382524706,57759507054,2408367427106,

%T 101604258942813,4373090645047650,193104747980308379,

%U 8776137990134208386,411230178369151616856,19887402814123893337150,993118621992840412774504,51217036176798656934165346

%N Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals nine.

%H Alois P. Heinz, <a href="/A324453/b324453.txt">Table of n, a(n) for n = 9..30</a>

%F a(n) = A324435(n) - A324436(n).

%Y Column k=9 of A324429.

%Y Cf. A324435, A324436.

%K nonn

%O 9,2

%A _Alois P. Heinz_, Feb 28 2019