A381218 Odd numbers with both an odd number of prime factors (counted with multiplicity) and an odd number of distinct prime factors. (Intersection of A067019 and A098903.)

3, 5, 7, 11, 13, 17, 19, 23, 27, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 105, 107, 109, 113, 125, 127, 131, 137, 139, 149, 151, 157, 163, 165, 167, 173, 179, 181, 191, 193, 195, 197, 199, 211, 223, 227, 229, 231, 233, 239

Offset: 1

Author

Harvey P. Dale, Feb 17 2025

Keywords

• nonn
• easy

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A067019, A098903

Programs

Mathematica

Select[Range[1,301,2],AllTrue[{PrimeOmega[#],PrimeNu[#]},OddQ]&]