1,2
Table of n, a(n) for n=1..7.
Eric Weisstein's World of Mathematics, Connected Dominating Set
Cf. A289874, A289876.
Sequence in context: A084065 A200140 A298104 * A182124 A303889 A198149
Adjacent sequences: A289862 A289863 A289864 * A289866 A289867 A289868
nonn,more
Eric W. Weisstein, Jul 13 2017
a(7) from Andrew Howroyd, Sep 04 2017
approved