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Search: id:A139588
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| A139588 |
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Nonprime numbers with Fibonacci number of divisors. |
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+0
3
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| 1, 4, 9, 16, 24, 25, 30, 40, 42, 49, 54, 56, 66, 70, 78, 81, 88, 102, 104, 105, 110, 114, 121, 128, 130, 135, 136, 138, 152, 154, 165, 169, 170, 174, 182, 184, 186, 189, 190, 195, 222, 230, 231, 232, 238, 246, 248, 250, 255, 258, 266, 273, 282, 285, 286, 289
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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A000005(a(n)) is a Fibonacci number.
The union of {1}, A001248, A030514, A030626, A030631, A137484, etc. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 26 2009]
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FORMULA
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A123193 \ A000040. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 23 2009]
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CROSSREFS
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Cf. A000005, A000045, A018252, A123193, A139589, A139590.
Sequence in context: A009850 A009853 A008030 this_sequence A122986 A066427 A078593
Adjacent sequences: A139585 A139586 A139587 this_sequence A139589 A139590 A139591
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KEYWORD
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easy,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), May 09 2008
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 23 2009
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