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 A324447 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals three. 2
 1, 6, 57, 678, 9375, 146334, 2555228, 49498389, 1054882116, 24545326598, 619415271672, 16854164945997, 491956017936245, 15335174679459134, 508475723159116576, 17870522292434937714, 663618269365250877446, 25964529622925026990819, 1067602511902741954478695 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,2 LINKS Alois P. Heinz, Table of n, a(n) for n = 3..404 FORMULA a(n) = A306386(n) - A324430(n). CROSSREFS Column k=3 of A324429. Cf. A306386, A324430. Sequence in context: A130565 A124556 A207412 * A060435 A153851 A141372 Adjacent sequences:  A324444 A324445 A324446 * A324448 A324449 A324450 KEYWORD nonn AUTHOR Alois P. Heinz, Feb 28 2019 STATUS approved

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Last modified December 10 04:15 EST 2019. Contains 329885 sequences. (Running on oeis4.)