a(n) is the number of rooted 6-regular maps on the Klein bottle with n vertices and 2n edges.

A348812

a(n) is the number of rooted 6-regular maps on the Klein bottle with n vertices and 2n edges.

Terms

    a(0) =42a(1) =3846a(2) =300048a(3) =22171638a(4) =1595739432a(5) =113110095540

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