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Search: id:A091727
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| A091727 |
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Norms of prime ideals of Z[sqrt(-5)]. |
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+0
3
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| 2, 3, 5, 7, 23, 29, 41, 43, 47, 61, 67, 83, 89, 101, 103, 107, 109, 121, 127, 149, 163, 167, 169, 181, 223, 227, 229, 241, 263, 269, 281, 283, 289, 307, 347, 349, 361, 367, 383, 389, 401, 409, 421, 443, 449, 461, 463, 467, 487
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Consists of primes congruent to 1, 2, 3, 5, 7, 9 (mod 20) together with the squares of all other primes.
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REFERENCES
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D. Cox, Primes of the form x^2+ny^2, Wiley, 1989.
A. Frohlich and M. J. Taylor, Algebraic number theory, Cambridge university press, 1991.
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CROSSREFS
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Adjacent sequences: A091724 A091725 A091726 this_sequence A091728 A091729 A091730
Sequence in context: A024770 A038603 A106116 this_sequence A030144 A068690 A069556
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Boddington (psb(AT)maths.warwick.ac.uk), Feb 02 2004
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