Table of n, a(n) for n=0..5.
The six independent sets of the 3-cube are: the empty set, one vertex, two vertices on a common facet, two vertices on opposite corners, three neighbors of a vertex and four vertices of a tetrahedron.
Sequence in context: A032908 A192366 A318039 * A275487 A096100 A260161
Adjacent sequences: A060628 A060629 A060630 * A060632 A060633 A060634
David Eppstein, Apr 14 2001