A324451 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals seven.

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

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