A324432 Number of labeled cyclic chord diagrams with n chords such that every chord has length at least six.

1, 0, 0, 0, 0, 0, 1, 29, 879, 23559, 607897, 16179520, 449286927, 13098525681, 401675273973, 12961858610835, 439969542845247, 15694595867800757, 587665598756534677, 23065866584266238427, 947631130543961813887, 40691002929409496892633, 1823524185613956274776800

Offset

0,8

Links

Alois P. Heinz, Table of n, a(n) for n = 0..200

Crossrefs

Column k=6 of A324428.

Sequence in context: A042626 A157877 A158665 * A167738 A107964 A096699

Adjacent sequences: A324429 A324430 A324431 * A324433 A324434 A324435

Keyword

nonn

Author

Alois P. Heinz, Feb 27 2019

Status

approved