A234634 Numbers of undirected cycles in the n-Sierpinski sieve graph.

1, 11, 1033, 1030304099, 873851166316875626844153297, 531723201747806346628696993678355296791302025810590916630277786972117723914960891

Offset

1,2

Comments

Term a(7) has 243 decimal digits and a(8) has 727 decimal digits. - Andrew Howroyd, Jun 18 2017

Links

Andrew Howroyd, Table of n, a(n) for n = 1..8

Eric Weisstein's World of Mathematics, Graph Cycle

Eric Weisstein's World of Mathematics, Sierpinski Sieve Graph

Crossrefs

Cf. A246957, A246958, A246959.

Sequence in context: A073903 A069710 A046187 * A004811 A227323 A126197

Adjacent sequences: A234631 A234632 A234633 * A234635 A234636 A234637

Keyword

nonn

Author

Eric W. Weisstein, Dec 28 2013

Extensions

a(4)-a(6) from Andrew Howroyd, Jun 18 2017

Status

approved