Number of distinct vampire numbers (definition 2) having 2n digits.

A048935

Number of distinct vampire numbers (definition 2) having 2n digits.

Terms

    a(0) =0a(1) =7a(2) =148a(3) =3228a(4) =108454a(5) =4390670a(6) =208423682a(7) =11039126154

External references