A084997 Numbers which can be written as the sum as well as the product of 2 primes, not necessarily the same.

4, 6, 10, 14, 15, 21, 22, 26, 33, 34, 38, 39, 46, 55, 58, 62, 69, 74, 82, 85, 86, 91, 94, 106, 111, 115, 118, 122, 129, 133, 134, 141, 142, 146, 158, 159, 166, 178, 183, 194, 201, 202, 206, 213, 214, 218, 226, 235, 253, 254, 259, 262, 265, 274, 278

Offset: 1

Author

Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 30 2003

Keywords

• nonn
• easy

Comments

Intersection of A014091 and A001358; A100484 is a subsequence.

Examples

			n=14: 11 + 3 = 14 and 2 * 7 = 14, therefore 14 is a term;
n=15: 13 + 2 = 15 and 3 * 5 = 15, therefore 15 is a term.
E.g. 21 = 19 + 2, 19 and 2 are prime and 21 = 7 * 3, 7 and 3 are primes.
Example: 9 = 3*3 and 2+7
		

Links

• Eric Weisstein's World of Mathematics, Goldbach Conjecture
• Index entries for sequences related to Goldbach conjecture

Crossrefs

Cf. A014091, A100962.

Extensions

Corrected and extended by Michael Lahm (mpl148(AT)psu.edu), Apr 24 2006

More terms from Joseph A. Agnew (jaa249(AT)psu.edu), Apr 30 2006