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 A031383 a(n) = prime(9*n - 2). 1
 17, 53, 97, 139, 191, 239, 283, 349, 401, 457, 509, 577, 631, 683, 751, 821, 877, 941, 1009, 1061, 1117, 1193, 1259, 1307, 1409, 1459, 1523, 1583, 1637, 1721, 1787, 1871, 1933, 2003, 2081, 2137, 2221, 2287, 2351, 2411, 2477, 2579, 2659 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Ivan Panchenko, Table of n, a(n) for n = 1..1000 EXAMPLE a(1) = 17 because 9 * 1 - 2 = 7 and the 7th prime is 17. a(2) = 53 because 9 * 2 - 2 = 16 and the 16th prime is 53. MATHEMATICA Table[Prime[9n - 2], {n, 45}] (* Alonso del Arte, Apr 08 2011 *) PROG (MAGMA)  [ NthPrime(9*n-2): n in [1..1000] ]; // Vincenzo Librandi, Apr 08 2011 CROSSREFS Cf. A017245. Sequence in context: A044119 A044500 A142105 * A248697 A180456 A154409 Adjacent sequences:  A031380 A031381 A031382 * A031384 A031385 A031386 KEYWORD nonn AUTHOR STATUS approved

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Last modified August 16 10:49 EDT 2022. Contains 356168 sequences. (Running on oeis4.)