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Search: id:A114820
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| A114820 |
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Indices of Fibonacci numbers with 11 prime factors when counted with multiplicity. |
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+0
1
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| 138, 140, 160, 190, 208, 222, 230, 250, 261, 285, 310, 318, 345, 351, 387, 388, 399, 402, 426, 469, 470, 483, 485, 488, 498, 507, 508, 518, 531, 534, 549, 568, 596, 598, 632, 656, 671, 678, 686, 688, 703, 715, 786, 788, 806, 808, 844, 872, 873, 874, 902
(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)=138 because 138th fibonacci number(i.e. 30960598847965113057878492344) consists of 11 prime factors (i.e. 2*2*2*137*139*461*691*829*18077*28657*1485571)
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PROGRAM
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(PARI) n=1; while(n<320, if(bigomega(fibonacci(n))==11, print1(n, ", ")); n++)
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CROSSREFS
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Sequence in context: A064104 A122703 A031964 this_sequence A107939 A008888 A045045
Adjacent sequences: A114817 A114818 A114819 this_sequence A114821 A114822 A114823
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KEYWORD
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hard,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), May 24 2006
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