A090890 30*a(n) is the gap between sexy prime triples in the n-th sexy prime triple triple whose initial term is 11.

291, 564, 742, 2639, 4319, 5278, 5408, 7431, 10119, 10413, 11085, 14056, 14672, 19002, 23492, 26737, 31962, 33912, 35308, 36743, 37870, 45602, 54348, 56693, 59353, 60211, 64397, 64509, 65391, 72562, 92617, 94609, 106309, 114552, 142160

Offset: 1

Author

Ray G. Opao, Feb 16 2004

Keywords

• nonn

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 ].

Examples

			a(2)=564 identifies the second sexy prime triple triple whose initial term is 11: {{11, 17, 23}, {11+30*564, 17+30*564, 23+30*564}, {11+2*30*564, 17+2*30*564, 23+2*30*564}} which is equal to {{11, 17, 23}, {16931, 16937, 16943}, {33851, 33857, 33863}}.
		

Crossrefs

Cf. A023201, A046117.