A347724 - OEIS

%I #9 Jan 19 2022 14:32:33

%S 2,4,17,102,925,12508,274369,8955595,447311286,34069625935,

%T 3993234239468

%N Number of irredundant sets in the n-triangular grid graph.

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

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

%Y Cf. A346143, A347639.

%K nonn,more

%O 0,1

%A _Eric W. Weisstein_, Sep 11 2021

%E Missing a(0) inserted and a(7)-a(10) from _Andrew Howroyd_, Jan 19 2022