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 at least one of the primes 2,3 and is not divisible by at least one of the primes 5,7.
A128959
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 at least one of the primes 2,3 and is not divisible by at least one of the primes 5,7.
Terms
- a(0) =82a(1) =810a(2) =8096a(3) =80953a(4) =809524a(5) =8095239a(6) =80952382a(7) =809523810a(8) =8095238096a(9) =80952380953a(10) =809523809524
External references
- oeis: A128959