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Search: id:A060265
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| A060265 |
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Largest prime less than 2n. |
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+0
7
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| 3, 5, 7, 7, 11, 13, 13, 17, 19, 19, 23, 23, 23, 29, 31, 31, 31, 37, 37, 41, 43, 43, 47, 47, 47, 53, 53, 53, 59, 61, 61, 61, 67, 67, 71, 73, 73, 73, 79, 79, 83, 83, 83, 89, 89, 89, 89, 97, 97, 101, 103, 103, 107, 109, 109, 113, 113, 113, 113, 113, 113, 113, 127, 127, 131
(list; graph; listen)
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OFFSET
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2,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=2,...,1000
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MAPLE
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with(numtheory): [seq(prevprime(2*i), i=2..256)];
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PROGRAM
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(PARI) { for (n=2, 1000, write("b060265.txt", n, " ", precprime(2*n)); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 03 2009]
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CROSSREFS
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Cf. A020482, A049653, A088631. Apart from initial term, same as A060308.
Sequence in context: A082683 A084752 A037464 this_sequence A098566 A006540 A099726
Adjacent sequences: A060262 A060263 A060264 this_sequence A060266 A060267 A060268
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Mar 23 2001
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