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A079305 First near twin primes of order 6n: smallest p such that p, p+2, p+6n and p+6n+2 are primes. 0
5, 5, 11, 5, 11, 5, 17, 11, 5, 11, 5, 29, 29, 17, 11, 5, 5, 29, 197, 17, 11, 5, 11, 5, 29, 41, 17, 11, 5, 11, 5, 5, 29, 107, 17, 11, 5, 11, 5, 29, 101, 17, 11, 5, 11, 5, 29, 59, 17, 11, 5, 107, 29, 107, 17, 11, 5, 71, 107, 59, 461, 59, 41, 137, 29, 431, 17, 11, 5, 11, 5, 29, 179 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..73.

MATHEMATICA

a[n_] := For[p=5, True, p+=6, If[PrimeQ[p]&&PrimeQ[p+2]&&PrimeQ[p+6n]&&PrimeQ[p+6n+2], Return[p]]]

PROG

(PARI) neartp(n) = { forstep(d=6, n, 6, forprime(x=3, n, if(isprime(x+2) & isprime(x+d) & isprime(x+d+2), print1(x", "); break ) ) ) }

CROSSREFS

Sequence in context: A087705 A087033 A175902 * A247871 A204902 A151728

Adjacent sequences:  A079302 A079303 A079304 * A079306 A079307 A079308

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Feb 09 2003

EXTENSIONS

Edited by Dean Hickerson, Feb 11 2003

STATUS

approved

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Last modified May 9 15:34 EDT 2021. Contains 343742 sequences. (Running on oeis4.)