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Search: id:A078656
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| A078656 |
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a(n) = prime(k) where k = n-th prime congruent to 1 mod 10. |
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+0
1
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| 31, 127, 179, 283, 353, 547, 739, 877, 1087, 1153, 1297, 1523, 1597, 1741, 1823, 2063, 2221, 2749, 2909, 3001, 3259, 3517, 3733, 3911, 4153, 4421, 4663, 4759, 4943, 5189, 5281, 5701, 5801, 6229, 6311, 6841, 7109, 7417, 7649, 7841, 8117, 8221, 8389, 8513
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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Prime[10Select[Range[110], PrimeQ[10# + 1] &] + 1]
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PROGRAM
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(PARI) pip(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. A024912.
Sequence in context: A153073 A042886 A042888 this_sequence A095322 A127578 A158563
Adjacent sequences: A078653 A078654 A078655 this_sequence A078657 A078658 A078659
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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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EXTENSIONS
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Edited by Robert G. Wilson v (kspaint.com), Dec 17 2002
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