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%I #13 Jan 19 2022 12:40:18
%S 1,3,7,51,214,2357,25611,551596
%N Number of maximal irredundant sets in the n-triangular grid graph.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/MaximalIrredundantSet.html">Maximal Irredundant Set</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TriangularGridGraph.html">Triangular Grid Graph</a>
%Y Cf. A347724.
%K nonn,more
%O 0,2
%A _Eric W. Weisstein_, Sep 16 2021
%E a(7) from _Andrew Howroyd_, Jan 19 2022
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