A032177 Number of connected functions of n points with no fixed points and with no symmetries.

0, 0, 1, 2, 6, 12, 30, 66, 156, 357, 842, 1961, 4643, 10960, 26072, 62084, 148499, 355784, 855038, 2058536, 4967099, 12005308, 29067646, 70483478, 171158311, 416168250, 1013156687, 2469301316, 6024696764, 14713845227, 35968547836, 88003373522, 215493542625

Offset

1,4

Links

Table of n, a(n) for n=1..33.

Formula

a(n) = A032175(n) - A004111(n). [Corrected by Sean A. Irvine, May 28 2020]

Crossrefs

Cf. A002862, A004111, A032175.

Sequence in context: A182863 A161507 A335711 * A095349 A291518 A291445

Adjacent sequences: A032174 A032175 A032176 * A032178 A032179 A032180

Keyword

nonn

Author

Christian G. Bower

Extensions

More terms from Sean A. Irvine, May 28 2020

Status

approved