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A205616 Even numbers that are not the sum of two non-Ramanujan primes (A174635). 2
2, 4, 52, 70, 100, 124, 130, 148, 208, 232, 238, 292, 352, 418, 628 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
No other terms < 2*10^8. Conjectured to be complete.
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
EXAMPLE
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.
CROSSREFS
Sequence in context: A211169 A085325 A082661 * A115587 A018337 A092389
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified February 25 13:12 EST 2024. Contains 370330 sequences. (Running on oeis4.)