cp's OEIS Frontend

A210957 Prime pair (p, q), p<=q, such that p + q = 2*n and p*q is the minimal product.

%I A210957 #15 Jul 18 2012 04:46:19
%S A210957 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,
%T A210957 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,
%U A210957 7,53,3,59,3,61,5,61,7,61,3,67,5,67,3,71,3,73
%N A210957 Prime pair (p, q), p<=q, such that p + q = 2*n and p*q is the minimal product.
%C A210957 A020481 and A020482 interleaved.
%F A210957 p_n = A020481(n), n >= 2.
%F A210957 q_n = A020482(n), n >= 2.
%F A210957 p_n + q_n = 2*n, n >= 2.
%F A210957 p_n * q_n = A073046(n), n >= 2.
%e A210957 -----------------------------------
%e A210957                  2*n    A073046(n)
%e A210957        Pair       =         =
%e A210957 n     (p, q)     p+q       p*q
%e A210957 -----------------------------------
%e A210957 2     (2, 2)      4          4
%e A210957 3     (3, 3)      6          9
%e A210957 4     (3, 5)      8         15
%e A210957 5     (3, 7)     10         21
%e A210957 6     (5, 7)     12         35
%e A210957 7     (3, 11)    14         33
%e A210957 8     (3, 13)    16         39
%e A210957 9     (5, 13)    18         65
%e A210957 10    (3, 17)    20         51
%e A210957 11    (3, 19)    22         57
%e A210957 12    (5, 19)    24         95
%Y A210957 Cf. A000040, A002373, A073046, A210967.
%K A210957 nonn
%O A210957 2,1
%A A210957 _Omar E. Pol_, Jun 29 2012