A052198 Primes p such that p, p+42, p+84 are consecutive primes.

247099, 689467, 1008617, 1629767, 1658627, 2024647, 2750999, 2811719, 2880907, 2921777, 3264449, 3295027, 3311317, 3365449, 3555269, 3668419, 4059229, 4412099, 4440529, 4549309, 4619357, 4690219, 4802947, 4955179, 5115259

Offset

1,1

Comments

Old name was: Primes p(k) such that p(k+2)-p(k+1)=p(k+1)-p(k)=42.

Links

Zak Seidov, Table of n, a(n) for n = 1..2000

Mathematica

Select[Partition[Prime[Range[400000]], 3, 1], Differences[#]=={42, 42}&][[All, 1]] (* Harvey P. Dale, May 28 2017 *)

Prog

(PARI) is_A052198(n)=nextprime(n+1)==n+42 && nextprime(n+43)==n+84 && isprime(n) \\ Charles R Greathouse IV, Jan 07 2013, typo corrected by M. F. Hasler, Jan 13 2013

Crossrefs

Cf. A001223, A033451, A047948, A052197.

Sequence in context: A237313 A321039 A230525 * A053077 A229872 A172796

Adjacent sequences: A052195 A052196 A052197 * A052199 A052200 A052201

Keyword

nonn

Author

Labos Elemer, Jan 28 2000

Extensions

New name from Charles R Greathouse IV, Jan 07 2013

Status

approved