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Search: id:A114824
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| A114824 |
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Indices of Fibonacci numbers with 12 distinct prime factors. |
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+0
1
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| 176, 192, 198, 224, 297, 315, 364, 385, 410, 430, 441, 455, 496, 555, 582, 606, 609, 621, 627, 638, 682, 710, 711, 726, 729, 734, 759, 775, 805, 814, 826, 846, 854, 897, 903, 908, 932, 935, 981, 987, 994
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Blair Kelly, Fibonacci and Lucas Factorizations.
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EXAMPLE
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a(1)=176 because 176th fibonacci number(i.e. 2706074082469569338358691163510069157) consists of 12 distinct prime factors (i.e. 3 * 7 * 43 * 47 * 89 * 199 * 263 * 307 * 881 * 967 * 93058241 * 56241856)
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PROGRAM
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(PARI) n=1; while(n<320, if(omega(fibonacci(n))==12, print1(n, ", ")); n++)
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CROSSREFS
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Sequence in context: A056935 A104651 A136603 this_sequence A063344 A075291 A133063
Adjacent sequences: A114821 A114822 A114823 this_sequence A114825 A114826 A114827
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KEYWORD
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hard,more,nonn
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AUTHOR
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Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 19 2006
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)stanford.edu), Apr 26 2006
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