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A090258 Last term of prime quadruples. 5
13, 19, 109, 199, 829, 1489, 1879, 2089, 3259, 3469, 5659, 9439, 13009, 15649, 15739, 16069, 18049, 18919, 19429, 21019, 22279, 25309, 31729, 34849, 43789, 51349, 55339, 62989, 67219, 69499, 72229, 77269, 79699, 81049, 82729, 88819, 97849 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

A090258 = Select[Range[9, 10^5 - 1, 2], Union[PrimeQ[# - {0, 2, 6, 8}]] == {True} &] (* Alonso del Arte, Aug 12 2012 *)

Transpose[Select[Partition[Prime[Range[9500]], 4, 1], Differences[#]=={2, 4, 2}&]] [[4]] (* Harvey P. Dale, Nov 11 2013 *)

PROG

(PARI) quintpr(n) = { s=0; forprime(p=5, n, if(isprime(p+2) && isprime(p+6) && isprime(p+8), print1(p+8", "); ) ); print(); print(s+.0) }

CROSSREFS

Equals A064974 - 1.

Sequence in context: A241486 A180531 A271926 * A241246 A153266 A166664

Adjacent sequences:  A090255 A090256 A090257 * A090259 A090260 A090261

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Jan 24 2004

STATUS

approved

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Last modified December 7 17:16 EST 2016. Contains 278890 sequences.