A307846 - OEIS

%I #8 May 14 2019 19:16:13

%S 1,4085185

%N Number of (undirected) cycles in the n-Sierpinski carpet graph.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/GraphCycle.html">Graph Cycle</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/SierpinskiCarpetGraph.html">Sierpinski Carpet Graph</a>

%F a(2) = 7^8 - 6^8.

%K nonn,hard,more,bref

%O 1,2

%A _Eric W. Weisstein_, May 01 2019