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 A090776 30*a(n) is the gap between sexy prime triples in the n-th sexy prime triple triple whose initial term is 7. 0
 12, 24, 55, 62, 90, 262, 1090, 1245, 1459, 2057, 3043, 3296, 7390, 11625, 13961, 26423, 27557, 29833, 48809, 55711, 68794, 70180, 72554, 78025, 84654, 108590, 112321, 117995, 147101, 160730, 176889, 180829, 184182, 203586, 204116, 217587 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 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 ]. LINKS EXAMPLE a(2)=24 identifies the second sexy prime triple triple whose initial term is 7: {{7, 13, 19}, {7+30*24, 13+30*24, 19+30*24}, {7+2*30*24, 13+2*30*24, 19+2*30*24}} which is equal to {{7, 13, 19}, {727, 733, 739}, {1447, 1453, 1459}}. CROSSREFS Cf. A023201, A046117. Sequence in context: A081808 A260261 A080495 * A247944 A123980 A097704 Adjacent sequences:  A090773 A090774 A090775 * A090777 A090778 A090779 KEYWORD nonn AUTHOR Ray G. Opao, Feb 08 2004 STATUS approved

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Last modified December 6 14:15 EST 2019. Contains 329806 sequences. (Running on oeis4.)