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Search: id:A106950
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| A106950 |
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Primes of the form x^2+18y^2. |
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+0
6
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| 19, 43, 67, 73, 97, 139, 163, 193, 211, 241, 283, 307, 313, 331, 337, 379, 409, 433, 457, 499, 523, 547, 571, 577, 601, 619, 643, 673, 691, 739, 769, 787, 811, 859, 883, 907, 937, 1009, 1033, 1051, 1123, 1129, 1153, 1171, 1201, 1249, 1291, 1297, 1321
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-72. See A106856 for more information.
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FORMULA
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Primes congruent to 1,19 modulo 24. - Michael Somos Aug 19 2006
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PROGRAM
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(PARI) {a(n)= local(m, c); if(n<1, 0, c=0; m=0; while( c<n, m++; if( isprime(m)& m%24==1|m%24==19, c++)); m)} /* Michael Somos Aug 19 2006 */
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CROSSREFS
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Sequence in context: A095086 A095079 A087779 this_sequence A095103 A094843 A094845
Adjacent sequences: A106947 A106948 A106949 this_sequence A106951 A106952 A106953
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KEYWORD
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nonn,easy
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), May 09 2005
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