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Search: id:A123982
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| A123982 |
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Numbers n for which 12n+1, 12n+5 and 12n+11 are primes. |
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+0
1
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| 1, 3, 8, 19, 29, 38, 56, 71, 73, 78, 84, 91, 101, 108, 119, 124, 129, 133, 134, 166, 199, 203, 224, 236, 246, 288, 294, 301, 316, 344, 376, 399, 411, 423, 488, 623, 628, 631, 656, 686, 724, 728, 819, 861, 871, 883, 894, 1008, 1009, 1053, 1074, 1086, 1156, 1179
(list; graph; listen)
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OFFSET
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1,2
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MAPLE
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a:=proc(n) if isprime(12*n+1)=true and isprime(12*n+5)=true and isprime(12*n+11)=true then n else fi end: seq(a(n), n=1..1400); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 06 2006
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MATHEMATICA
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Select[Range[1200], And @@ PrimeQ /@ ({1, 5, 11} + 12#) &] (*Chandler*)
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CROSSREFS
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Cf. A110801.
Sequence in context: A023371 A124086 A091109 this_sequence A113535 A139020 A147358
Adjacent sequences: A123979 A123980 A123981 this_sequence A123983 A123984 A123985
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Oct 30 2006
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 05 2006
More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Nov 06 2006
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