a(n) is equal to the number of positive integers m less than or equal to 10^n such that m is not divisible by the prime 7 and is not divisible by at least one of the primes 2, 3 and 5.
A128950
a(n) is equal to the number of positive integers m less than or equal to 10^n such that m is not divisible by the prime 7 and is not divisible by at least one of the primes 2, 3 and 5.
Terms
- a(0) =83a(1) =829a(2) =8286a(3) =82858a(4) =828571a(5) =8285715a(6) =82857143a(7) =828571429a(8) =8285714286a(9) =82857142858a(10) =828571428571
External references
- oeis: A128950