0,3

Number of maps from {0,1}^n to itself with no roots.

F. Robert, Discrete Iterations, Springer-Verlag, 1986, p. 167.

Cf. A057156, A091324.

Sequence in context: A143675 A033435 A013851 this_sequence A162284 A116268 A128838

Adjacent sequences: A092255 A092256 A092257 this_sequence A092259 A092260 A092261

nonn

N. J. A. Sloane (njas(AT)research.att.com), Feb 19 2004