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Search: id:A085516
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| A085516 |
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Order of first occurrence of a sequence of exactly n consecutive primes of the form 6*k-1. |
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+0
3
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| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 11, 13, 15, 14, 16, 18, 20, 17, 22, 19, 21, 25, 23, 24, 27, 26, 28, 29, 30, 31
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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This sequence gives the index of A055626(n) after sorting by increasing magnitude.
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LINKS
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J. K. Andersen, Consecutive Congruent Primes.
Hugo Pfoertner, Record producing runs of primes of the forms 6k+-1
Hugo Pfoertner, FORTRAN function ISPRIM to check primality.
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EXAMPLE
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a(2)=2, a(3)=3, a(4)=4 because the first occurrence of exactly 3 consecutive
primes of the form 6*k-1 (47,53,59) follows the first occurrence of
exactly 2 (23,29) and precedes the first occurrence of exactly 4
(251,257,263,269) primes of this form.
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PROGRAM
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FORTRAN program given at link.
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CROSSREFS
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Cf. A055626, A085515 (sorted occurrence of first runs of "6k+1" primes).
Sequence in context: A077741 A132575 A031297 this_sequence A020753 A101947 A167520
Adjacent sequences: A085513 A085514 A085515 this_sequence A085517 A085518 A085519
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KEYWORD
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more,nonn
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AUTHOR
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Hugo Pfoertner (hugo(AT)pfoertner.org), Jul 31 2003
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EXTENSIONS
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More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Oct 27 2006
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