A142102 - OEIS

%I #9 Sep 08 2022 08:45:35

%S 7,43,79,151,223,331,367,439,547,619,691,727,907,1051,1087,1123,1231,

%T 1303,1447,1483,1627,1663,1699,1879,1951,1987,2131,2203,2239,2311,

%U 2347,2383,2671,2707,2851,2887,3067,3319,3391,3463,3499,3571,3607,3643,3823,3931

%N Primes congruent to 7 mod 36.

%H Vincenzo Librandi, <a href="/A142102/b142102.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 12n log n. - _Charles R Greathouse IV_, Jul 02 2016

%t Select[Prime[Range[1500]],MemberQ[{7},Mod[#,36]]&] (* _Vincenzo Librandi_, Aug 19 2012 *)

%o (Magma) [p: p in PrimesUpTo(5000) | p mod 36 eq 7 ]; // _Vincenzo Librandi_, Aug 19 2012

%o (PARI) is(n)=isprime(n) && n%36==7 \\ _Charles R Greathouse IV_, Jul 02 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Jul 11 2008