OFFSET
1,2
COMMENTS
The nine terms in any sexy prime triple triple {{a, b, c}, {d, e, f}, {g, h, i}} may be arranged to form a 3 X 3 magic square [ h a f / c e g / d i b ].
EXAMPLE
a(3)=246 identifies the third sexy prime triple triple whose initial term is 5: {{5, 11, 17}, {5+6*246, 11+6*246, 17+6*246}, {5+2*6*246, 11+2*6*246, 17+2*6*246}} which is equal to {{5, 11, 17}, {1481, 1487, 1493}, {2957, 2963, 2969}}.
CROSSREFS
KEYWORD
nonn
AUTHOR
Ray G. Opao, Feb 08 2004
STATUS
approved