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%I #9 Aug 08 2024 21:08:30
%S 7,149,325743,5043335556445821,
%T 30078276004358776950017905751009745821222898855
%N Number of connected induced subgraphs in the n-Hanoi graph.
%H Andrew Howroyd, <a href="/A308581/b308581.txt">Table of n, a(n) for n = 1..7</a>
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConnectedGraph.html">Connected Graph</a>.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HanoiGraph.html">Hanoi Graph</a>.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Vertex-InducedSubgraph.html">Vertex-Induced Subgraph</a>.
%Y Cf. A373441.
%K nonn
%O 1,1
%A _Eric W. Weisstein_, Jun 08 2019
%E a(4) onwards from _Andrew Howroyd_, Aug 08 2024