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A199004 Position of n-th prime sextuplet A022008(n) among prime 5-tuples A022007. 1
1, 2, 7, 8, 9, 35, 49, 55, 75, 76, 82, 84, 115, 124, 133, 140, 144, 153, 167, 172, 177, 200, 201, 202, 203, 211, 213, 232, 235, 237, 240, 243, 245, 252, 256, 262, 276, 281, 285, 297, 305, 319, 322, 325, 331, 349, 352, 353, 374, 377, 379, 380, 399, 407, 415 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
A022007(a(n))=A022008(n).
EXAMPLE
a(3)=7 because A022008(3)=16057=A022007(7),
a(1000)=12091 because A022008(1000)=5054057077=A022007(12091).
MATHEMATICA
lst = {}; cnt = 0; Do[p = Prime[n]; If[PrimeQ[p+4] && PrimeQ[p+6] && PrimeQ[p+10] && PrimeQ[p+12], cnt++; If[PrimeQ[p+16], AppendTo[lst, cnt]]], {n, 10000000}]; lst (* T. D. Noe, Nov 01 2011 *)
CROSSREFS
Sequence in context: A317303 A045980 A104339 * A168064 A243167 A039005
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 01 2011
STATUS
approved

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Last modified April 22 02:54 EDT 2024. Contains 371887 sequences. (Running on oeis4.)