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%I #7 Dec 18 2024 22:58:44
%S 0,3,9,22,43
%N Lower matching number of the n X n X n grid graph.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GridGraph.html">Grid Graph</a>.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LowerMatchingNumber.html">Lower Matching Number</a>.
%Y Cf. A280984 (lower matching number of the n X n grid graph).
%K nonn,more,hard
%O 1,2
%A _Eric W. Weisstein_, Dec 17 2024