Number of even Ulam numbers <= 10^n.

A382861

Number of even Ulam numbers <= 10^n.

Terms

    a(0) =4a(1) =14a(2) =65a(3) =429a(4) =3804a(5) =37216a(6) =371464a(7) =3702470a(8) =36999540a(9) =369917405

External references