A205616 Even numbers that are not the sum of two non-Ramanujan primes (A174635).

2, 4, 52, 70, 100, 124, 130, 148, 208, 232, 238, 292, 352, 418, 628

Offset: 1

Author

John W. Nicholson and Donovan Johnson, Jan 30 2012

Keywords

• nonn

Comments

No other terms < 2*10^8. Conjectured to be complete.

Examples

			70 is a term because no two non-Ramanujan primes (A174635) sum to 70. 72 is not a term because 19 + 53 = 72. 19 and 53 are both non-Ramanujan primes.
		

Links

• J. Sondow, Ramanujan primes and Bertrand's postulate, Amer. Math. Monthly 116 (2009), 630-635.
• J. Sondow, J. W. Nicholson, and T. D. Noe, Ramanujan Primes: Bounds, Runs, Twins, and Gaps, J. Integer Seq. 14 (2011) Article 11.6.2

Crossrefs

Cf. A104272, A174635, A173634, A204814, A205301, A205617, A205618.