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 A328704 Primes dividing nonzero terms in A002065. 1
 3, 13, 61, 151, 211, 223, 739, 1009, 1531, 4363, 4513, 5503, 6277, 6397, 7753, 7873, 9463, 11353, 11587, 11677, 12007, 12241, 13669, 15061, 15391, 17509, 17791, 21157, 25243, 25747, 26959, 28351, 28411, 29641, 30553, 30727, 31873, 33289, 33469, 33997, 36343, 36721, 37117, 37201 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Primes in A328703. Sequence is infinite: it contains all prime factors of the numbers A002065(p), where p is any prime. Note that gcd(A002065(p), A002065(q)) = 1 for primes p != q. So the set of prime factors of {A002065(p) : p prime} is infinite. LINKS PROG (PARI) v(n) = my(v=[0], k, flag=1); for(i=2, n+1, k=(v[#v]^2+v[#v]+1)%n; v=concat(v, k); for(j=1, i-1, if(v[j]==k, flag=0)); if(flag==0, break())); v a(n) = isprime(n) && !(v(n)[#v(n)]) CROSSREFS Cf. A002065, A328703. Sequence in context: A232611 A238445 A355298 * A341077 A357749 A112568 Adjacent sequences: A328701 A328702 A328703 * A328705 A328706 A328707 KEYWORD nonn AUTHOR Jianing Song, Oct 26 2019 STATUS approved

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Last modified March 25 07:12 EDT 2023. Contains 361511 sequences. (Running on oeis4.)