login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A329578
First of three consecutive primes with common gap 48.
1
3565931, 3653863, 3985903, 5425613, 5647361, 6126971, 6292081, 6532553, 7133983, 7360363, 7389493, 7700131, 7865833, 7956163, 8467903, 8708291, 8972701, 9203743, 9603361, 9863551, 10279813, 10971743, 11998391, 12225251, 12474251, 12620843, 12966881, 13288211, 13376261, 13543451
OFFSET
1,1
MATHEMATICA
Select[Partition[Prime[Range[900000]], 3, 1], Differences[#]=={48, 48}&] [[All, 1]] (* Harvey P. Dale, Aug 23 2021 *)
PROG
(PARI) vecextract( A134123, select(t->t==48, A134123[^1]-A134123[^-1], 1)) \\ Terms of A134123 with indices corresponding to first differences of 48: gives a(1..56) from A134123(1..10^4).
(Magma) [p:p in PrimesUpTo(14000000)| NextPrime(p)-p eq 48 and NextPrime(p+48)-p eq 96]; // Marius A. Burtea, Jan 03 2020
CROSSREFS
Cf. A134123, A067388: first of two, resp. four primes with common gap 48.
Cf. A047948, A052188, A052189, A052190, A052195, A052197, A052198, A089234 (analog for gaps 2, 4, 6, 12, 18, 24, ..., 60).
Sequence in context: A209857 A107349 A198167 * A053078 A209911 A235077
KEYWORD
nonn
AUTHOR
M. F. Hasler, Jan 02 2020
STATUS
approved