[tex]\it n\in\mathbb{N},\ \ \ 2n-1\in\ D_{35} \Rightarrow 2n-1\in\{1,\ 5,\ 7,\ 35\}|_{+1}\Rightarrow2n\in\{2,\ 6,\ 8,\ 36\}|_{:2}\Rightarrow\\ \\ \Rightarrow n\in\{1,\ \ 3,\ \ 4,\ \ 18\}[/tex]
