A032176 Functions of n points with no symmetries.

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

Author

Christian G. Bower

Keywords

• nonn

References

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

Links

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

Crossrefs

Cf. A001372.

Formula

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