A035533 Number of numbers up to 10^n with exactly 4 divisors.

3, 32, 292, 2608, 23327, 209892, 1903925, 17426119, 160785303, 1493767176, 13959963675, 131125939909, 1237087823423, 11715901648298, 111329815356516, 1061057287085058

Offset: 1

Author

Shyam Sunder Gupta

Keywords

• nonn

Links

• Index entries for sequences related to numbers of primes in various ranges

Extensions

a(14)-a(16) from Donovan Johnson, Oct 16 2010

a(15)-a(16) corrected by Donovan Johnson, Nov 11 2012