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A123083 Prime quartets of form k, k+6, k+12, k+18. 2
5, 11, 17, 23, 11, 17, 23, 29, 41, 47, 53, 59, 61, 67, 73, 79, 251, 257, 263, 269, 601, 607, 613, 619, 641, 647, 653, 659, 1091, 1097, 1103, 1109, 1481, 1487, 1493, 1499, 1601, 1607, 1613, 1619, 1741, 1747, 1753, 1759, 1861, 1867, 1873, 1879, 2371, 2377, 2383 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MAPLE
i:=1:for k from 1 to 5000 do if isprime(k) and isprime(k+6)and isprime(k+12)and isprime(k+18) then a[i]:=k:a[i+1]:=k+6:a[i+2]:=k+12:a[i+3]:=k+18:i:=i+4 fi od: seq(a[n], n=1..i-1);
MATHEMATICA
Select[Table[p+{0, 6, 12, 18}, {p, Prime[Range[400]]}], AllTrue[#, PrimeQ]&]//Flatten (* Harvey P. Dale, Sep 17 2023 *)
CROSSREFS
Cf. A001097.
Sequence in context: A314225 A314226 A314227 * A285127 A157847 A348934
KEYWORD
nonn
AUTHOR
Miklos Kristof, Sep 27 2006
STATUS
approved

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Last modified February 20 19:36 EST 2024. Contains 370217 sequences. (Running on oeis4.)