A032175 -id:A032175 - cp's OEIS frontend

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

Christian G. Bower

nonn

Cf. A002862, A004111, A032175.

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

More terms from Sean A. Irvine, May 28 2020

A032176 Functions of n points with no symmetries.

Original entry on oeis.org

1, 1, 3, 6, 15, 34, 82, 193, 464, 1111, 2683, 6482, 15730, 38232, 93177, 227458, 556323, 1362639, 3342504, 8209130, 20185204, 49684404, 122413446, 301870406, 745019874, 1840103575, 4548008306, 11248190948

Offset: 1

Christian G. Bower

nonn

F. Bergeron, G. Labelle and P. Leroux, Combinatorial Species and Tree-Like Structures, Camb. 1998, p. 328. (4.4.31).

C. G. Bower, Transforms (2)
N. J. A. Sloane, Transforms

Cf. A001372.

WEIGH transform of A032175. Also g.f. = (1-B(x^2))/(1-B(x)), B(x)=g.f. of A004111.

cp's OEIS Frontend

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

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