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Number of graphs of order n with exactly two Hamiltonian cycles.
3

%I #6 Jul 04 2024 16:34:39

%S 0,0,0,2,11,75,740,10692,229068,7005022,305866545,18868736922

%N Number of graphs of order n with exactly two Hamiltonian cycles.

%H Jan Goedgebeur, Barbara Meersman, and Carol T. Zamfirescu, <a href="https://arxiv.org/abs/1812.05650">Graphs with few Hamiltonian Cycles</a>, arXiv:1812.05650 [math.CO], 2018-2019. See Table 6 at p. 27.

%Y Cf. A126149, A307956, A374315, A374316.

%K nonn,more

%O 2,4

%A _Stefano Spezia_, Jul 04 2024