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A114836
Indices of Fibonacci numbers with 9 distinct prime factors.
13
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
OFFSET
1,1
EXAMPLE
a(1)=80 because the 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).
PROG
(PARI) n=1; while(n<335, if(omega(fibonacci(n))==9, print1(n, ", ")); n++)
CROSSREFS
Column k=9 of A303217.
Sequence in context: A126783 A255477 A296878 * A294740 A069086 A119482
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta, Feb 19 2006
EXTENSIONS
More terms from Ryan Propper, Apr 26 2006
STATUS
approved