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A101768
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Numbers n such that n, 2n+1, 3n+2, 4n+3, 5n+4, 6n+5, 7n+6 are primes.
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2
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2894219, 5246009, 8189999, 8678669, 13951559, 18160379, 24765509, 38911949, 40645919, 60041519, 64523969, 108405989, 124028309, 126392699, 132767039, 142738679, 189142589, 242024369, 248451839, 325561319, 354218759, 392136359
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| a={}; Do[p=Prime[n]; If[PrimeQ[p*2+1] && PrimeQ[p*3+2] && PrimeQ[p*4+3] && PrimeQ[p*5+4] && PrimeQ[p*6+5] && PrimeQ[p*7+6], AppendTo[a, p]], {n, 1, 17^5}]; Print[a]; - Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 29 2008
Select[Range[4*10^8], And@@PrimeQ[#*Range[7]+Range[0, 6]]&] (* From Harvey P. Dale, Jul 22 2011 *)
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CROSSREFS
| Cf. A000040, A005384, A067256-A067258, A101767-A101770.
Sequence in context: A204413 A204789 A204524 * A101769 A205292 A205900
Adjacent sequences: A101765 A101766 A101767 * A101769 A101770 A101771
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KEYWORD
| nonn,easy
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AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com) and Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 31 2004
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