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 A110673 Numbers that are neither the sum nor the difference of two primes. 2
 23, 37, 47, 53, 67, 79, 83, 89, 93, 97, 113, 117, 119, 121, 123, 127, 131, 143, 145, 157, 163, 167, 173, 185, 187, 203, 205, 207, 211, 215, 217, 219, 223, 233, 245, 247, 251, 257, 263, 277, 287, 289, 293, 297, 299, 301, 303, 307, 317, 321, 323, 325, 327, 331 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence is obtained by interleaving A099019 and A134797. From Goldbach's conjecture, apparently all terms are odd. - Bob Selcoe, Mar 10 2015 Intersection of A007921 and A014092. - Michel Marcus, Mar 16 2015 LINKS Michel Marcus, Table of n, a(n) for n = 1..7596 Oliver Knill, Goldbach for Gaussian, Hurwitz, Octavian and Eisenstein primes, arXiv preprint arXiv:1606.05958 [math.NT], 2016. Wikipedia, Goldbach's conjecture CROSSREFS Cf. A007921 (not the difference), A014092 (not the sum). Cf. A099019, A134797. Sequence in context: A059798 A290767 A173829 * A134797 A209617 A179780 Adjacent sequences:  A110670 A110671 A110672 * A110674 A110675 A110676 KEYWORD easy,nonn AUTHOR Eric Angelini, Sep 14 2005 EXTENSIONS Corrected and extended by Joshua Zucker, May 04 2006 Offset corrected by Arkadiusz Wesolowski, May 19 2012 STATUS approved

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Last modified September 26 23:47 EDT 2020. Contains 337378 sequences. (Running on oeis4.)