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URL: https://oeis.org/A176003

⇱ A176003 - OEIS

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A176003
a(n) = 3*(n-th noncomposite number) - 2.
4
1, 4, 7, 13, 19, 31, 37, 49, 55, 67, 85, 91, 109, 121, 127, 139, 157, 175, 181, 199, 211, 217, 235, 247, 265, 289, 301, 307, 319, 325, 337, 379, 391, 409, 415, 445, 451, 469, 487, 499, 517, 535, 541, 571, 577, 589, 595, 631, 667, 679, 685, 697, 715, 721, 751
OFFSET
1,2
LINKS
Barry Brent, On the Constant Terms of Certain Laurent Series, Preprints (2023) 2023061164.
FORMULA
a(n) = 3*A008578(n) - 2. - R. J. Mathar, Apr 16 2010
MATHEMATICA
Join[{1}, Table[3 Prime[n] - 2, {n, 60}]] (* Vincenzo Librandi, Dec 08 2015 *)
PROG
(Magma) [3*NthPrime(n)-2: n in [0..58]]; // Vincenzo Librandi, Dec 08 2015
CROSSREFS
Sequence in context: A194073 A023496 A191868 * A216880 A144730 A058570
KEYWORD
nonn
AUTHOR
EXTENSIONS
Entries checked by R. J. Mathar, Apr 16 2010
STATUS
approved