A078299 Numbers which can be expressed as the sum of two distinct primes in exactly four ways.

36, 42, 50, 74, 80, 82, 86, 88, 92, 94, 152, 158

Offset: 1

Author

Shyam Sunder Gupta, Mar 29 2003

Keywords

• nonn

Examples

			36 is a term as 36 = 31 + 5 = 29 + 7 = 23 + 13 = 19 + 17 are only the four ways to express 36 as a sum of two distinct primes.
		

Crossrefs

Cf. A077914 (2 ways), A077969 (3 ways), A080854 (5 ways), A080862 (6 ways).