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 A205711 Positions of multiples of 9 in A204890 (differences of primes). 1
 7, 31, 37, 41, 51, 63, 69, 75, 82, 92, 96, 101, 112, 123, 129, 133, 140, 150, 159, 164, 178, 187, 198, 202, 214, 224, 228, 232, 236, 241, 246, 260, 269, 273, 280, 290, 294, 298, 301, 305, 310, 315, 323, 331, 336, 344, 358, 367, 371, 375, 386, 390 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS For a guide to related sequences, see A205558. LINKS Table of n, a(n) for n=1..52. EXAMPLE In A204890=(1,3,2,5,4,2,9,8,6,4,11,10,8,...), multiples of 9 are in positions 7,31,37,... See the example at A205712. MATHEMATICA (See the program at A205712.) With[{prs=Prime[Range[30]]}, Flatten[Position[Flatten[Table[prs[[n]]- Take[ prs, n-1], {n, 2, Length[prs]}]], _?(Divisible[#, 9]&)]]] (* Harvey P. Dale, Dec 01 2013 *) CROSSREFS Cf. A204890, A205712, A205558. Sequence in context: A184121 A167768 A103630 * A040064 A241101 A238664 Adjacent sequences: A205708 A205709 A205710 * A205712 A205713 A205714 KEYWORD nonn AUTHOR Clark Kimberling, Jan 31 2012 STATUS approved

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Last modified February 22 05:23 EST 2024. Contains 370239 sequences. (Running on oeis4.)