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 A025019 Smallest prime in Goldbach partition of A025018(n). 13
 2, 3, 5, 7, 19, 23, 31, 47, 73, 103, 139, 173, 211, 233, 293, 313, 331, 359, 383, 389, 523, 601, 727, 751, 829, 929, 997, 1039, 1093, 1163, 1321, 1427, 1583, 1789, 1861, 1877, 1879, 2029, 2089, 2803, 3061, 3163, 3457, 3463, 3529, 3613, 3769, 3917, 4003, 4027, 4057 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Increasing subsequence of A020481. LINKS N. J. A. Sloane, Table of n, a(n) for n=1..67 (from the web page of Tomás Oliveira e Silva) Mark A. Herkommer, Goldbach Conjecture Research Tomás Oliveira e Silva, Goldbach conjecture verification Jörg Richstein, Verifying the Goldbach conjecture up to 4 * 10^14, Math. Comp., 70 (2001), 1745-1749. EXAMPLE 1427 and 1583 are two consecutive terms because A020481(167535419) = 1427 and A020481(209955962) = 1583 and for 167535419 < n < 209955962 A020481(n) <= 1427. MATHEMATICA p = 1; q = {}; Do[ k = 2; While[ !PrimeQ[k] || !PrimeQ[2n - k], k++ ]; If[k > p, p = k; q = Append[q, p]], {n, 2, 10^8}]; q CROSSREFS Cf. A025018, A020481, A097224, A097226. Sequence in context: A129693 A153590 A244529 * A140327 A163074 A230041 Adjacent sequences:  A025016 A025017 A025018 * A025020 A025021 A025022 KEYWORD nonn AUTHOR David W. Wilson, Dec 11 1999 EXTENSIONS Edited and extended by Robert G. Wilson v, Dec 13 2002 More terms and b-file added by N. J. A. Sloane, Nov 28 2007 STATUS approved

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Last modified July 22 20:51 EDT 2019. Contains 325226 sequences. (Running on oeis4.)