Number of squarefree integers in the closed interval [10^n, -1 + 2*10^n], i.e., among 10^n consecutive integers beginning with 10^n.
A077642
Number of squarefree integers in the closed interval [10^n, -1 + 2*10^n], i.e., among 10^n consecutive integers beginning with 10^n.
Terms
- a(0) =1a(1) =7a(2) =61a(3) =607a(4) =6077a(5) =60787a(6) =607951a(7) =6079284a(8) =60792732a(9) =607927092a(10) =6079270913a(11) =60792710227a(12) =607927101577
External references
- oeis: A077642