id:A114841 - OEIS Search Results

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Indices of Fibonacci numbers with 3 distinct prime factors.

+0
4

15, 16, 18, 21, 33, 35, 37, 38, 39, 46, 49, 51, 58, 62, 65, 67, 82, 86, 103, 106, 119, 122, 125, 139, 142, 145, 158, 166, 179, 181, 226, 233, 235, 241, 257, 263, 274, 281, 299, 301, 317, 337, 383, 389, 419, 457, 463, 473, 479, 491, 521, 541, 557, 619, 643, 659 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Blair Kelly, Fibonacci and Lucas Factorizations.`
	EXAMPLE	`a(1)=15 because 15th fibonacci number consists of 3 distinct prime factors (i.e. 610 = 2 x 5 x 61)`
	PROGRAM	`(PARI) n=1; while(n<340, if(omega(fibonacci(n))==3, print1(n, ", ")); n++)`
	CROSSREFS	`Sequence in context: A004504 A090461 A138598 this_sequence A108856 A039689 A063530` `Adjacent sequences: A114838 A114839 A114840 this_sequence A114842 A114843 A114844`
	KEYWORD	`nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 19 2006`
	EXTENSIONS	`More terms from Ryan Propper (rpropper(AT)stanford.edu), Apr 26 2006`

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

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