A088184 Numbers that can be written as sum of two coprime semiprimes.

13, 19, 23, 25, 29, 31, 34, 35, 37, 39, 41, 43, 44, 46, 47, 49, 51, 53, 55, 57, 58, 59, 61, 63, 64, 65, 67, 68, 69, 71, 73, 74, 75, 76, 77, 79, 81, 82, 83, 85, 86, 87, 88, 89, 91, 92, 93, 94, 95, 97, 98, 99, 100, 101, 102, 103, 104, 106, 107, 109, 111, 112, 113, 114

Offset: 1

Author

Reinhard Zumkeller, Sep 22 2003

Keywords

• nonn

Comments

A088183(a(n))>0; complement of A088185.

Examples

			25 = 2*2+3*7, therefore 25 is a term;
2*2+2*11 is the only partition of n=26 into two semiprimes,
gcd(2*2,2*11)=2>1, therefore 26 is not a term.
		

Crossrefs

Cf. A001358.