0,3
Number of maps from {0,1}^n to itself with no roots.
F. Robert, Discrete Iterations, Springer-Verlag, 1986, p. 167.
Table of n, a(n) for n=0..5.
Cf. A057156, A091324.
Sequence in context: A319979 A293149 A013851 * A277842 A277843 A277844
Adjacent sequences: A092255 A092256 A092257 * A092259 A092260 A092261
nonn
N. J. A. Sloane, Feb 19 2004
approved
