A324451 - OEIS

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A324451

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

2

1, 46, 1973, 68201, 2098472, 64097193, 2008704765, 65104369974, 2195744407327, 77260041066718, 2838770935775962, 108941687605845691, 4365240928102864872, 182511493727454453315, 7955490810231969340127, 361168545333805402618994, 17059236243411156603252558

(list; graph; refs; listen; history; text; internal format)

OFFSET

7,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 7..97

FORMULA

a(n) = A324433(n) - A324434(n).

CROSSREFS

Column k=7 of A324429.

Cf. A324433, A324434.

Sequence in context: A364119 A331707 A223813 * A162889 A163232 A163802

Adjacent sequences: A324448 A324449 A324450 * A324452 A324453 A324454

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Feb 28 2019

STATUS

approved