A077914 Sums of two distinct primes in exactly two ways.

16, 18, 20, 22, 26, 28, 32, 62, 68

Offset: 1

Author

Shyam Sunder Gupta, Mar 29 2003

Keywords

• nonn
• more

Comments

Most likely no more terms. See A117929. - T. D. Noe, Mar 21 2012

Numbers k such that A117929(k) = 2. - Joerg Arndt, Jun 07 2021

Examples

			22 is a term as 22 = 19+3 = 17+5 are the only two ways to express 22 as a sum of two distinct primes.
		

Links

• G. L. Honaker, Jr., Prime Curio for 16, April 2000.

Crossrefs

Cf. A077969 (3 ways), A078299 (4 ways), A080854 (5 ways), A080862 (6 ways).