a(n) is the number of n-digit prime powers.

A304520

a(n) is the number of n-digit prime powers.

Terms

    a(0) =7a(1) =28a(2) =158a(3) =1087a(4) =8420a(5) =69034a(6) =586400a(7) =5097725a(8) =45088364a(9) =404211372a(10) =3663020374a(11) =33489909119a(12) =308457775318

External references