OFFSET
1,1
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..7
Eric Weisstein's World of Mathematics, Connected Graph.
Eric Weisstein's World of Mathematics, Hanoi Graph.
Eric Weisstein's World of Mathematics, Vertex-Induced Subgraph.
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Jun 08 2019
EXTENSIONS
a(4) onwards from Andrew Howroyd, Aug 08 2024
STATUS
approved