OFFSET
1,1
COMMENTS
Term a(6) has 89 decimal digits and a(7) has 265. - Andrew Howroyd, Sep 08 2017
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, Sierpinski Sieve Graph
Eric Weisstein's World of Mathematics, Vertex-Induced Subgraph
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Sep 08 2017
EXTENSIONS
a(4)-a(5) from Andrew Howroyd, Sep 08 2017
STATUS
approved