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A234634 Numbers of undirected cycles in the n-Sierpinski sieve graph. 1
1, 11, 1033, 1030304099, 873851166316875626844153297, 531723201747806346628696993678355296791302025810590916630277786972117723914960891 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 4 03:18 EDT 2021. Contains 346442 sequences. (Running on oeis4.)