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A319114 Number of simple toroidal graphs on n nodes. 0

%I #6 Sep 11 2018 17:00:52

%S 0,0,0,0,1,14,222,5365

%N Number of simple toroidal graphs on n nodes.

%C a(n) <= A145269(n).

%C a(n) = A145269(n) for n < 8.

%C a(8) = A145269(8) - 15 since there are 15 double-toroidal graphs on 8 nodes (all of which are connected).

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

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

%Y Cf. A145269 (number of nonplanar simple graphs).

%K nonn,more

%O 1,6

%A _Eric W. Weisstein_, Sep 10 2018

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Last modified April 25 10:51 EDT 2024. Contains 371967 sequences. (Running on oeis4.)