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Search: id:A078857
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| A078857 |
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Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e. when d=2,4 or 6) and forming d-pattern=[6, 6,2]; short d-string notation of pattern = [662]. |
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17
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| 47, 167, 257, 557, 587, 647, 1217, 2957, 4007, 6257, 6857, 7577, 10847, 11927, 14537, 16217, 17477, 19457, 24407, 25457, 26687, 26717, 29867, 41507, 41597, 48527, 51407, 54617, 56087, 60077, 61547, 68477, 75527, 82457, 84047, 94427, 101267
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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Primes p = p(i) such that p(i+1)=p+6, p(i+2)=p+6+6, p(i+3)=p+6+6+2.
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EXAMPLE
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p=47,47+6=53,47+6+6=59,47+6+6+2=61 are consecutive primes.
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CROSSREFS
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Cf. analogous prime quadruple sequences with various possible {2, 4, 6}-difference-patterns in brackets: A007530[242], A078847[246], A078848[264], A078849[266], A052378[424], A078850[426], A078851[462], A078852[466], A078853[624], A078854[626], A078855[642], A078856[646], A078857[662], A078858[664], A033451[666].
Sequence in context: A140641 A141994 A132251 this_sequence A139992 A142916 A158632
Adjacent sequences: A078854 A078855 A078856 this_sequence A078858 A078859 A078860
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Dec 11 2002
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EXTENSIONS
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Listed terms verified by Ray Chandler (rayjchandler(AT)sbcglobal.net), Apr 20 2009
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