A372247 Lowest prime p in a ladder of 4 consecutive primes p, p+2, p+6, p+14.

1997, 2237, 2267, 2657, 6197, 6827, 8087, 17027, 17387, 19427, 21017, 21377, 22277, 22637, 23057, 24107, 29567, 37307, 43397, 43787, 53087, 55337, 56807, 58907, 62297, 65537, 65837, 78887, 81017, 82007, 82217, 89597, 90017, 91367, 93887, 95087, 97547, 105527, 108287, 110567, 112247, 113357

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Example

2267, 2269, 2273 and 2281 are consecutive primes with gaps of 2, 4 and 8, so 2267 is in the sequence.

Mathematica

First /@ Parallelize[
  Select[Table[NextPrime[Prime@i, Range@4], {i, 10^5}],
   Differences@# == {2, 4, 8} &]] (* Mikk Heidemaa, Apr 25 2024 *)

Crossrefs

Subsequence of A022004. A372248 is a subsequence.

Sequence in context: A034588 A233935 A250380 * A079012 A063472 A063054

Adjacent sequences: A372244 A372245 A372246 * A372248 A372249 A372250

Keyword

nonn

Author

R. J. Mathar, Apr 24 2024

Status

approved