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A114816 Indices of Fibonacci numbers with 7 prime factors when counted with multiplicity. +0
1
30, 42, 56, 66, 70, 81, 104, 105, 136, 148, 152, 164, 175, 195, 207, 212, 244, 254, 259, 289, 291, 292, 298, 305, 319, 326, 332, 344, 365, 367, 403, 404, 423, 445, 447, 451, 458, 478, 489, 511, 517, 519, 526, 533, 537, 543, 554, 565, 566, 597, 605, 679, 681 (list; graph; listen)
OFFSET

1,1

LINKS

Blair Kelly, Fibonacci and Lucas Factorizations.

EXAMPLE

a(1)=30 because 30th fibonacci number(i.e. 832040) consists of 7 prime factors (i.e. 2*2*2*5*11*31*61 )

PROGRAM

(PARI) n=1; while(n<310, if(bigomega(fibonacci(n))==7, print1(n, ", ")); n++)

CROSSREFS

Sequence in context: A097036 A090790 A090800 this_sequence A000977 A033992 A091454

Adjacent sequences: A114813 A114814 A114815 this_sequence A114817 A114818 A114819

KEYWORD

nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 19 2006

EXTENSIONS

More terms from Ryan Propper (rpropper(AT)stanford.edu), May 22 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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