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 A111092 Primes congruent to {1,69} mod 70. 1
 71, 139, 211, 281, 349, 419, 421, 491, 631, 701, 769, 839, 911, 1049, 1051, 1259, 1399, 1471, 1609, 1889, 2029, 2099, 2239, 2309, 2311, 2381, 2521, 2591, 2659, 2729, 2731, 2801, 2939, 3011, 3079, 3221, 3359, 3361 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS For every prime p here, the cyclotomic polynomial Phi(35p,x) is flat. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Prime[Range[500]], MemberQ[{1, 69}, Mod[#, 70]] &] (* Vincenzo Librandi, Aug 14 2012 *) PROG (Magma) [p: p in PrimesUpTo(4000) | p mod 70 in [1, 69]]; // Vincenzo Librandi, Aug 14 2012 CROSSREFS Cf. A000040, A117223. Sequence in context: A044194 A044575 A039543 * A140732 A025023 A253016 Adjacent sequences: A111089 A111090 A111091 * A111093 A111094 A111095 KEYWORD nonn,easy AUTHOR Giorgio Balzarotti and Paolo P. Lava, Oct 13 2005 EXTENSIONS Edited by T. D. Noe, May 19 2009 STATUS approved

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Last modified December 8 23:37 EST 2023. Contains 367681 sequences. (Running on oeis4.)