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A324449 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals five. 2
1, 17, 352, 6722, 137225, 3013170, 70909863, 1785795023, 48031299838, 1376860759082, 41968192206641, 1356883954535010, 46416330714749286, 1675869323349039899, 63713356727612022712, 2544933663663025077386, 106578973284507947559875, 4670547639650409700162167 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 5..200

FORMULA

a(n) = A324431(n) - A324432(n).

CROSSREFS

Column k=5 of A324429.

Cf. A324431, A324432.

Sequence in context: A294435 A137246 A171860 * A191589 A194729 A081421

Adjacent sequences:  A324446 A324447 A324448 * A324450 A324451 A324452

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Feb 28 2019

STATUS

approved

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Last modified January 21 04:53 EST 2020. Contains 331104 sequences. (Running on oeis4.)