A210967 Prime triples (p, q, r), p<=q<=r, such that p + q + r = 2*n + 1 and p*q*r is the minimum product.

2, 2, 3, 2, 2, 5, 2, 2, 7, 3, 3, 7, 2, 2, 11, 2, 2, 13, 3, 3, 13, 2, 2, 17, 2, 2, 19, 3, 3, 19, 2, 2, 23, 3, 3, 23, 3, 5, 23, 2, 2, 29, 2, 2, 31, 3, 3, 31, 3, 5, 31, 2, 2, 37, 3, 3, 37, 2, 2, 41, 2, 2, 43, 3, 3, 43, 2, 2, 47, 3, 3, 47, 3, 5, 47, 2, 2, 53, 3, 3, 53, 3, 5, 53, 2, 2, 59, 2, 2, 61, 3, 3, 61, 3, 5, 61, 2, 2, 67, 3, 3, 67, 2, 2, 71, 2, 2, 73, 3, 3, 73

Offset: 3

Author

Omar E. Pol, Jun 29 2012

Keywords

• nonn

Examples

			----------------------------------
                   p+q+r
      Triplets       =     A210968
n     (p, q, r)    2*n+1    p*q*r
----------------------------------
3     (2, 2, 3)      7       12
4     (2, 2, 5)      9       20
5     (2, 2, 7)     11       28
6     (3, 3, 7)     13       63
		

Crossrefs

Cf. A005408, A210968.