Search: id:A000059
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%I A000059 M0867 N0332
%S A000059 1,2,3,8,10,12,14,17,23,24,27,28,37,40,41,44,45,53,59,66,70,71,77,80,82,
%T A000059 87,90,97,99,102,105,110,114,119,121,124,127,133,136,138,139,144,148,
%U A000059 156,160,164,167,170,176,182,187,207,215,218,221,233,236,238,244,246
%N A000059 Numbers n such that (2n)^4 + 1 is prime.
%D A000059 J. Bohman, New primes of the form n^4+1, Nordisk Tidskr. Informationsbehandling 
               (BIT) 13 (1973), 370-372.
%D A000059 M. Lal, Primes of the form n^4 + 1, Math. Comp., 21 (1967), 245-247.
%D A000059 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000059 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%o A000059 (PARI) n=0;while(1,n=n+1;if(isprime( (2*n)^4+1 ),print(n))) - Hauke Worpel 
               (thebigh(AT)outgun.com), Jun 11 2008
%Y A000059 a(n)=A000068(n)/2 for n>1.
%Y A000059 Cf. A037896 primes of the form n^4+1.
%Y A000059 Sequence in context: A028732 A028751 A057543 this_sequence A097053 A132327 
               A100317
%Y A000059 Adjacent sequences: A000056 A000057 A000058 this_sequence A000060 A000061 
               A000062
%K A000059 nonn
%O A000059 1,2
%A A000059 N. J. A. Sloane (njas(AT)research.att.com).
%E A000059 More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Aug 27 2003

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