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A172367
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Numbers n > 0 such that n+4 is a prime.
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19
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1, 3, 7, 9, 13, 15, 19, 25, 27, 33, 37, 39, 43, 49, 55, 57, 63, 67, 69, 75, 79, 85, 93, 97, 99, 103, 105, 109, 123, 127, 133, 135, 145, 147, 153, 159, 163, 169, 175, 177, 187, 189, 193, 195, 207, 219, 223, 225, 229, 235, 237, 247, 253, 259, 265, 267, 273, 277, 279
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history;
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internal format)
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OFFSET
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1,2
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LINKS
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Sameen Ahmed Khan, Table of n, a(n) for n = 1..10000
Sameen Ahmed Khan, Primes in Geometric-Arithmetic Progression, arXiv:1203.2083v1 [math.NT], (Mar 09 2012).
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FORMULA
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a(n)=(n+2)th prime-4.
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EXAMPLE
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a(1)=5-4=1, a(2)=7-4=3.
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MATHEMATICA
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Table[Prime[n]-4, {n, 3, 53}] (* Charles R Greathouse IV, Mar 12 2012 *)
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PROG
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(PARI) a(n)=prime(n+2)-4 \\ Charles R Greathouse IV, Mar 12 2012
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CROSSREFS
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Cf. A000040, A006093, A040976, A086801.
Sequence in context: A111225 A032678 A073671 * A336234 A024901 A258011
Adjacent sequences: A172364 A172365 A172366 * A172368 A172369 A172370
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KEYWORD
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nonn,easy
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AUTHOR
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Juri-Stepan Gerasimov, Feb 01 2010
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STATUS
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approved
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