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 A272813 Nonnegative numbers n such that n^2 - 79n + 1601 is prime. 1
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS 80 is the smallest number not in this sequence. See A005846 for the corresponding primes. LINKS Robert Price, Table of n, a(n) for n = 1..4179 Eric Weisstein's World of Mathematics, Prime-Generating Polynomials EXAMPLE 4 is in this sequence since 4^2 - 79*4 + 1601 = 16-316+1601 = 1301 is prime. MATHEMATICA Select[Range[0, 100], PrimeQ[#^2 - 79# + 1601 ] &] PROG (PARI) lista(nn) = for(n=0, nn, if(isprime(n^2-79*n+1601), print1(n, ", "))); \\ Altug Alkan, May 06 2016 CROSSREFS Cf. A050268, A050267, A005846, A007641, A007635, A048988, A050265, A050266. Cf. A271980, A272030, A272074, A272075, A272160, A271144, A272285, A272401, A272438, A272444, A272410, A272555, A272710, A005846. Sequence in context: A038608 A105811 A209662 * A258070 A258071 A266279 Adjacent sequences:  A272810 A272811 A272812 * A272814 A272815 A272816 KEYWORD nonn AUTHOR Robert Price, May 06 2016 STATUS approved

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Last modified April 11 22:01 EDT 2021. Contains 342888 sequences. (Running on oeis4.)