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Number of irredundant sets in the n-gear graph.
2

%I #17 Nov 19 2023 01:24:29

%S 41,113,320,908,2574,7317,20855,59582,170681,490180,1411207,4072092,

%T 11774998,34114389,99006951,287783255,837649471,2441108294,7121588680,

%U 20795782761,60775937523,177746557324,520168686310,1523090681155,4461852378404,13076323061624

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

%H Christian Sievers, <a href="/A290589/b290589.txt">Table of n, a(n) for n = 3..200</a>

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

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

%Y Cf. A290378, A290640.

%K nonn

%O 3,1

%A _Eric W. Weisstein_, Aug 07 2017

%E a(13)-a(16) from _Andrew Howroyd_, Aug 11 2017

%E Missing a(12) inserted and a(17)-a(18) added by _Andrew Howroyd_, Aug 27 2017

%E More terms from _Christian Sievers_, Nov 18 2023