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 A020482 Greatest p with p, q both prime, p+q = 2n. 25
 2, 3, 5, 7, 7, 11, 13, 13, 17, 19, 19, 23, 23, 23, 29, 31, 31, 31, 37, 37, 41, 43, 43, 47, 47, 47, 53, 53, 53, 59, 61, 61, 61, 67, 67, 71, 73, 73, 73, 79, 79, 83, 83, 83, 89, 89, 89, 79, 97, 97, 101, 103, 103, 107, 109, 109, 113, 113, 113, 109, 113, 113, 109, 127, 127, 131, 131 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS a(n) = A171637(n,A035026(n)). - Reinhard Zumkeller, Mar 03 2014 LINKS H. J. Smith, Table of n, a(n) for n = 2..20000 MATHEMATICA a[n_] := {p, q} /. {ToRules @ Reduce[p+q == 2*n, {p, q}, Primes]} // Max; Table[a[n], {n, 2, 100}] (* Jean-François Alcover, Dec 19 2013 *) PROG (Haskell) a020482 = last . a171637_row  -- Reinhard Zumkeller, Mar 03 2014 (PARI) a(n)=forprime(q=2, n, if(isprime(2*n-q), return(2*n-q))) \\ Charles R Greathouse IV, Apr 28 2015 CROSSREFS Cf. A060264, A020481. Sequence in context: A195882 A156900 A039734 * A060308 A224911 A270176 Adjacent sequences:  A020479 A020480 A020481 * A020483 A020484 A020485 KEYWORD nonn AUTHOR STATUS approved

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Last modified January 22 23:00 EST 2019. Contains 319365 sequences. (Running on oeis4.)