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 A089376 Primes of the form k^2 - 7*k + 7. 3
 7, 37, 67, 127, 151, 337, 457, 547, 751, 1051, 1117, 1327, 1801, 2251, 2347, 2647, 2857, 3187, 3301, 4027, 5107, 6637, 6967, 7477, 8737, 9697, 10501, 11551, 13567, 17551, 21751, 23251, 23557, 25117, 28051, 28387, 30097, 31147, 33301, 35527 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna, 1988. Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta, UTET, CittaStudiEdizioni, Milano, 1997. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..5000 FORMULA a(n) = A089373(n)^2 - 7*A089373(n) + 7. - David Wasserman, Sep 15 2005 MAPLE select(isprime, [k^2-7*k+7\$k=1..250]); # Muniru A Asiru, Nov 24 2018 MATHEMATICA Select[Table[n^2-7n+7, {n, 6, 1000}], PrimeQ] (* Vincenzo Librandi, Dec 12 2011 *) PROG (Magma) [a: n in [6..200] | IsPrime(a) where a is n^2 - 7*n + 7]; // Vincenzo Librandi, Dec 12 2011 CROSSREFS Cf. A089373 (corresponding k). Sequence in context: A289353 A221982 A104915 * A337423 A031395 A138906 Adjacent sequences: A089373 A089374 A089375 * A089377 A089378 A089379 KEYWORD nonn,easy AUTHOR Giovanni Teofilatto, Dec 27 2003 EXTENSIONS More terms from David Wasserman, Sep 15 2005 STATUS approved

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Last modified May 25 12:29 EDT 2024. Contains 372788 sequences. (Running on oeis4.)