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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
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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:
A365816
A207412
A362167
*
A060435
A153851
A141372
Adjacent sequences:
A324444
A324445
A324446
*
A324448
A324449
A324450
KEYWORD
nonn
AUTHOR
Alois P. Heinz
, Feb 28 2019
STATUS
approved
