A140447 List of prime pairs of form p, p+22.

7, 29, 19, 41, 31, 53, 37, 59, 61, 83, 67, 89, 79, 101, 109, 131, 127, 149, 151, 173, 157, 179, 211, 233, 229, 251, 241, 263, 271, 293, 331, 353, 337, 359, 367, 389, 379, 401, 397, 419, 409, 431, 421, 443, 439, 461, 457, 479, 487, 509, 499, 521, 541, 563, 547

Offset

1,1

Comments

The two primes p and p+22 are not necessarily adjacent.

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Example

The pairs are (7, 29), (19, 41), (31, 53) etc.

Mathematica

{#, # + 22} & /@ Select[Prime@ Range@ 100, PrimeQ@ # && PrimeQ[# + 22] &] // Flatten (* Michael De Vlieger, May 23 2016 *)

Prog

(Ruby)
require 'prime'
ary = []
Prime.each(487447).each{|i| ary += [i, i + 22] if (i + 22).prime?}
p ary  # Seiichi Manyama, May 22 2016

Crossrefs

Cf. A000040, A094343.

Sequence in context: A050548 A261845 A181942 * A038934 A262285 A041088

Adjacent sequences: A140444 A140445 A140446 * A140448 A140449 A140450

Keyword

nonn

Author

Juri-Stepan Gerasimov, Jun 26 2008

Extensions

Typo in definition edited by D. S. McNeil, Dec 10 2009

Entries verified and extended by D. S. McNeil, Dec 10 2009

Status

approved