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Search: id:A116616
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| A116616 |
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Values of n such that p(2n+1) mod 12 = 7, where p(j) denotes the j-th prime. |
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1
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| 5, 9, 13, 15, 23, 30, 31, 33, 36, 37, 42, 46, 47, 49, 50, 52, 55, 57, 58, 62, 64, 65, 66, 70, 71, 74, 76, 77, 78, 81, 83, 87, 88, 89, 90, 96, 103, 106, 108, 114, 116, 117, 121, 123, 124, 130, 134, 142, 144, 148, 151, 152, 160, 163, 166, 167, 175, 182, 185, 191, 192
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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33 is in the sequence because the 67-th prime is 331 and 331 mod 12=7.
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MAPLE
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a:=proc(n) if ithprime(2*n+1) mod 12 = 7 then n else fi end: seq(a(n), n=0..215);
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MATHEMATICA
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Select[Range[220], Mod[Prime[2# + 1], 12] == 7 &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 08 2006
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CROSSREFS
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Sequence in context: A062976 A080580 A098991 this_sequence A080590 A051541 A086408
Adjacent sequences: A116613 A116614 A116615 this_sequence A116617 A116618 A116619
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KEYWORD
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nonn
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Mar 29 2006
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EXTENSIONS
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Edited by njas, Apr 05 2006
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