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A105760
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Numbers n such that (2*n + 7) is prime.
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10
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0, 2, 3, 5, 6, 8, 11, 12, 15, 17, 18, 20, 23, 26, 27, 30, 32, 33, 36, 38, 41, 45, 47, 48, 50, 51, 53, 60, 62, 65, 66, 71, 72, 75, 78, 80, 83, 86, 87, 92, 93, 95, 96, 102, 108, 110, 111, 113, 116, 117, 122, 125, 128, 131, 132, 135, 137, 138, 143, 150, 152, 153, 155, 162
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| Tony D. Noe and Jonathan Vos Post, Primes in Fibonacci n-step and Lucas n-step Sequences, Journal of Integer Sequences, Vol. 8 (2005), Article 05.4.4.
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EXAMPLE
| If n=0, then 2*0 + 7 = 7 (prime).
If n=15, then 2*15 + 7 = 37 (prime).
If n=27, then 2*27 + 7 = 61 (prime).
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MATHEMATICA
| (Prime[Range[4, 100]]-7)/2 [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Feb 08 2010]
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PROG
| (MAGMA)[n: n in [0..170]| IsPrime(2*n+7)][From V. Librandi, Dec 21 2010]
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CROSSREFS
| Cf. A153053 (Numbers n such that 2*n+7 is not a prime)
Sequence in context: A035057 A005099 A161720 * A050834 A179799 A191884
Adjacent sequences: A105757 A105758 A105759 * A105761 A105762 A105763
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KEYWORD
| nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), May 04 2005
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EXTENSIONS
| More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 18 2005
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