Search: id:A055494
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%I A055494
%S A055494 2,3,4,6,7,9,13,15,16,18,21,22,25,28,34,39,42,51,55,58,60,63,67,70,72,
%T A055494 76,78,79,81,90,91,100,102,106,111,112,118,120,132,139,142,144,148,151,
%U A055494 154,156,162,163,165,168,169,174,177,189,190,193,195,204,207,210,216
%N A055494 Numbers n such that n^2 - n + 1 is prime.
%D A055494 M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, 
               Bologna 1988
%D A055494 D. E. Knuth, "The Art of Computer Programming," Addison-Wesley, Reading, 
               MA, Volume II, page 378.
%D A055494 Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, 
               CittaStudiEdizioni, Milano 1997
%Y A055494 Equals A002384(n)+1.
%Y A055494 A002383 gives the primes.
%Y A055494 Sequence in context: A117307 A161890 A089388 this_sequence A165773 A064414 
               A002475
%Y A055494 Adjacent sequences: A055491 A055492 A055493 this_sequence A055495 A055496 
               A055497
%K A055494 nonn
%O A055494 1,1
%A A055494 Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2000
%E A055494 More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Sep 15 
               2005

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