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 A210957 Prime pair (p, q), p<=q, such that p + q = 2*n and p*q is the minimal product. 1
 2, 2, 3, 3, 3, 5, 3, 7, 5, 7, 3, 11, 3, 13, 5, 13, 3, 17, 3, 19, 5, 19, 3, 23, 5, 23, 7, 23, 3, 29, 3, 31, 5, 31, 7, 31, 3, 37, 5, 37, 3, 41, 3, 43, 5, 43, 3, 47, 5, 47, 7, 47, 3, 53, 5, 53, 7, 53, 3, 59, 3, 61, 5, 61, 7, 61, 3, 67, 5, 67, 3, 71, 3, 73 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS A020481 and A020482 interleaved. LINKS FORMULA p_n = A020481(n), n >= 2. q_n = A020482(n), n >= 2. p_n + q_n = 2*n, n >= 2. p_n * q_n = A073046(n), n >= 2. EXAMPLE -----------------------------------                  2*n    A073046(n)        Pair       =         = n     (p, q)     p+q       p*q ----------------------------------- 2     (2, 2)      4          4 3     (3, 3)      6          9 4     (3, 5)      8         15 5     (3, 7)     10         21 6     (5, 7)     12         35 7     (3, 11)    14         33 8     (3, 13)    16         39 9     (5, 13)    18         65 10    (3, 17)    20         51 11    (3, 19)    22         57 12    (5, 19)    24         95 CROSSREFS Cf. A000040, A002373, A073046, A210967. Sequence in context: A136132 A136545 A125843 * A306246 A147665 A222820 Adjacent sequences:  A210954 A210955 A210956 * A210958 A210959 A210960 KEYWORD nonn AUTHOR Omar E. Pol, Jun 29 2012 STATUS approved

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Last modified February 23 15:34 EST 2020. Contains 332167 sequences. (Running on oeis4.)