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 2 and is not divisible by at least one of the primes 3, 5 and 7.
A128954
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 2 and is not divisible by at least one of the primes 3, 5 and 7.
Terms
- a(0) =50a(1) =495a(2) =4952a(3) =49524a(4) =495238a(5) =4952381a(6) =49523810a(7) =495238095a(8) =4952380952a(9) =49523809524a(10) =495238095238
External references
- oeis: A128954