A324453 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals nine.

1, 122, 10980, 651962, 31844074, 1382524706, 57759507054, 2408367427106, 101604258942813, 4373090645047650, 193104747980308379, 8776137990134208386, 411230178369151616856, 19887402814123893337150, 993118621992840412774504, 51217036176798656934165346

Offset

9,2

Links

Alois P. Heinz, Table of n, a(n) for n = 9..30

Formula

a(n) = A324435(n) - A324436(n).

Crossrefs

Column k=9 of A324429.

Cf. A324435, A324436.

Sequence in context: A233071 A316526 A375896 * A275502 A275399 A275264

Adjacent sequences: A324450 A324451 A324452 * A324454 A324455 A324456

Keyword

nonn

Author

Alois P. Heinz, Feb 28 2019

Status

approved