A032208 Number of connected functions on n points with a loop of length 12.

1, 1, 8, 45, 229, 1043, 4474, 18034, 69698, 259516, 938342, 3308793, 11427018, 38763095, 129499981, 426937452, 1391429896, 4489322347, 14356694844, 45554354359, 143546523999, 449545164857, 1400098598183, 4339078154900, 13387747332571, 41141433154653

Offset: 12

Author

Christian G. Bower

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 12..500
• C. G. Bower, Transforms (2)

Crossrefs

Column 12 of A339428.

Formula

"CIK[ 12 ]" (necklace, indistinct, unlabeled, 12 parts) transform of A000081.

a(n) ~ A187770 * A051491^n / n^(3/2). - Vaclav Kotesovec, Dec 25 2020

Extensions

Terms a(35) and beyond from Andrew Howroyd, Dec 04 2020