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%I #5 Dec 07 2020 12:36:38
%S 2,80,3360,161280
%N Orientable embedding number gamma_1 for bouquet B_n.
%D Jonathan L. Gross and Thomas W. Tucker, Enumerating graph embeddings and partial-duals by genus and Euler genus, ECA 1:1 (2021) Article S2S1. See Table 1.
%D J. L. Gross and J. Yellen, eds., Handbook of Graph Theory, CRC Press, 2004; p. 649.
%Y A column of A123850.
%K nonn,more
%O 2,1
%A _N. J. A. Sloane_, Nov 19 2006
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