OFFSET
1,1
COMMENTS
For every prime p here, the cyclotomic polynomial Phi(15p,x) is flat.
Primes in A175887. [Reinhard Zumkeller, Jan 07 2012]
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
C. K. Caldwell, The Prime Pages.
MATHEMATICA
Select[Prime[Range[1000]], MemberQ[{1, 29}, Mod[#, 30]]&] (* Vincenzo Librandi, Aug 14 2012 *)
Select[Flatten[#+{1, 29}&/@(30Range[0, 50])], PrimeQ] (* Harvey P. Dale, Sep 08 2021 *)
PROG
(Haskell)
a132240 n = a132240_list !! (n-1)
a132240_list = [x | x <- a175887_list, a010051 x == 1]
-- Reinhard Zumkeller, Jan 07 2012
(Magma) [ p: p in PrimesUpTo(1300) | p mod 30 in {1, 29} ]; // Vincenzo Librandi, Aug 14 2012
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Aug 15 2007
STATUS
approved