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Search: id:A153355
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| A153355 |
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Numbers n such that 5n-1 is a prime |
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+0
3
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| 4, 6, 12, 16, 18, 22, 28, 30, 36, 40, 46, 48, 54, 70, 72, 76, 78, 82, 84, 88, 90, 96, 100, 102, 114, 120, 124, 132, 142, 144, 148, 154, 162, 166, 168, 172, 184, 186, 202, 204, 208, 210, 214, 222, 226, 246, 250, 252, 256, 258, 264, 280, 282, 286, 288, 292, 298
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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One more than the value of A024897 at the same index. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 05 2009]
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FORMULA
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The set of numbers (1+A030433(k))/5, k=1,2,3,4,.... [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 03 2009]
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EXAMPLE
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For n=2, 5n-1=19; for n=30, 5n-1=149
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CROSSREFS
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Sequence in context: A074870 A104236 A122781 this_sequence A024904 A139056 A120453
Adjacent sequences: A153352 A153353 A153354 this_sequence A153356 A153357 A153358
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KEYWORD
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nonn
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AUTHOR
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Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 24 2008
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EXTENSIONS
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Extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 05 2009
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