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A114836
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Indices of Fibonacci numbers with 9 distinct prime factors.
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13
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80, 84, 88, 96, 100, 108, 132, 138, 156, 184, 189, 196, 222, 232, 243, 248, 250, 255, 268, 272, 273, 284, 286, 295, 318, 325, 328, 333, 357, 370, 402, 406, 412, 418, 426, 435, 477, 498, 534, 539, 556, 559, 561, 591, 602, 603, 604, 628, 629, 637, 639, 678
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(1)=80 because 80th fibonacci number(i.e. 23416728348467685) consists of 9 distinct prime factors (i.e. 3 x 5 x 7 x 11 x 41 x 47 x 1601 x 2161 x 3041
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PROG
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(PARI) n=1; while(n<335, if(omega(fibonacci(n))==9, print1(n, ", ")); n++)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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