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A132232
Primes congruent to 11 (mod 30).
14
11, 41, 71, 101, 131, 191, 251, 281, 311, 401, 431, 461, 491, 521, 641, 701, 761, 821, 881, 911, 941, 971, 1031, 1061, 1091, 1151, 1181, 1301, 1361, 1451, 1481, 1511, 1571, 1601, 1721, 1811, 1871, 1901, 1931, 2081, 2111, 2141, 2351, 2381, 2411, 2441, 2531
OFFSET
1,1
FORMULA
From Ray Chandler, Apr 07 2009: (Start)
a(n) = A158614(n)*30 + 11.
Intersection of A030430 and A007528. (End)
MATHEMATICA
Select[Prime[Range[1000]], MemberQ[{11}, Mod[#, 30]]&] (* Vincenzo Librandi, Aug 14 2012 *)
Select[Range[11, 2600, 30], PrimeQ] (* Harvey P. Dale, Mar 07 2020 *)
PROG
(Magma) [p: p in PrimesUpTo(3000) | p mod 30 eq 11 ]; // Vincenzo Librandi, Aug 14 2012
(PARI) is(n)=isprime(n) && n%30==11 \\ Charles R Greathouse IV, Jul 01 2016
KEYWORD
nonn,easy
AUTHOR
Omar E. Pol, Aug 15 2007
EXTENSIONS
Extended by Ray Chandler, Apr 07 2009
STATUS
approved