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Search: id:A078654
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| A078654 |
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a(n) = prime(k) where k = n-th prime congruent to 3 mod 4. |
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+0
2
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| 5, 17, 31, 67, 83, 127, 191, 211, 277, 331, 353, 401, 431, 563, 587, 709, 739, 797, 877, 967, 991, 1063, 1153, 1217, 1297, 1409, 1433, 1499, 1597, 1669, 1741, 1847, 2027, 2063, 2221, 2341, 2417, 2477, 2609, 2647, 2897, 3001, 3067, 3109, 3299, 3319, 3407
(list; graph; listen)
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OFFSET
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0,1
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PROGRAM
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(PARI) tpip(n, m, r) = {sr=0; forprime(x=3, n, if(x%m == r, v=prime(x); sr+=1.0/v; print1(v" "); ) ); print(); print("m="m" r="r" sr="sr); }
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CROSSREFS
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Cf. A006450, A078653, A078655.
Sequence in context: A147434 A147336 A128354 this_sequence A083364 A026394 A004538
Adjacent sequences: A078651 A078652 A078653 this_sequence A078655 A078656 A078657
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Dec 14 2002
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