3,1

Table of n, a(n) for n=3..8.

Eric Weisstein's World of Mathematics, Connected Graph

Eric Weisstein's World of Mathematics, Torus Grid Graph

Eric Weisstein's World of Mathematics, Vertex-Induced Subgraph

Cf. A298106.

Sequence in context: A256081 A338476 A152309 * A327592 A340419 A191942

Adjacent sequences: A298121 A298122 A298123 * A298125 A298126 A298127

nonn,more

Eric W. Weisstein, Jan 13 2018

a(6)-a(8) from Andrew Howroyd, Jan 13 2018

approved