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 A269705 Numbers n such that prime(n) == 1 (mod 9). 1
 8, 12, 21, 29, 31, 38, 42, 46, 58, 63, 75, 78, 84, 93, 99, 100, 106, 112, 115, 131, 134, 141, 145, 153, 157, 159, 167, 169, 179, 187, 191, 193, 207, 211, 224, 232, 242, 244, 247, 257, 260, 264, 272, 276, 279, 287, 303, 306, 310, 316, 324, 326, 327, 335, 337 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Associated primes are in A061237. LINKS EXAMPLE a(1) = 8 because prime(8) = 19 and 19 == 1 (mod 9). MATHEMATICA Select[Range[400], Mod[Prime[#], 9] == 1 &] PROG (MAGMA) [n: n in [1..500] | NthPrime(n) mod 9 eq 1]; (PARI) lista(nn) = for(n=1, nn, if(Mod(prime(n), 9)==1, print1(n, ", "))); \\ Altug Alkan, Mar 04 2016 CROSSREFS Cf. A061237. Cf. similar sequences listed in A269703. Sequence in context: A072843 A300065 A072902 * A189322 A105571 A141616 Adjacent sequences:  A269702 A269703 A269704 * A269706 A269707 A269708 KEYWORD nonn AUTHOR Vincenzo Librandi, Mar 04 2016 STATUS approved

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Last modified January 15 18:16 EST 2021. Contains 340188 sequences. (Running on oeis4.)