cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A271000 Table read by rows: list of prime sextuplets (p, p+4, p+6, p+10, p+12, p+16).

Original entry on oeis.org

7, 11, 13, 17, 19, 23, 97, 101, 103, 107, 109, 113, 16057, 16061, 16063, 16067, 16069, 16073, 19417, 19421, 19423, 19427, 19429, 19433, 43777, 43781, 43783, 43787, 43789, 43793, 1091257, 1091261, 1091263, 1091267, 1091269, 1091273, 1615837, 1615841, 1615843, 1615847, 1615849, 1615853
Offset: 1

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Author

Arkadiusz Wesolowski, Jul 12 2016

Keywords

Comments

A prime sextuplet is a constellation of six successive primes with distance 16, and is of the form (p, p+4, p+6, p+10, p+12, p+16).
Initial members p (other than 7) of prime sextuplets are congruent to 97 (mod 210). - Ash, David, Aug 04 2017

Crossrefs

Programs

  • Magma
    lst:=[]; for p in [5..1615837 by 2] do if p le 7 xor p mod 210 eq 97 then if IsPrime(p) then t:=[c: c in [p+4..p+16] | IsPrime(c)]; if #t eq 5 then lst:=lst cat [p] cat t; end if; end if; end if; end for; lst;
  • Mathematica
    m = {0, 4, 6, 10, 12, 16}; Union@ Flatten@ Map[# + m &, Select[Prime@ Range[2*10^5], Times @@ Boole@ PrimeQ[# + m] == 1 &]] (* Michael De Vlieger, Jul 13 2016 *)

Formula

a(6*n-5) = A022008(n).