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A117550 Indices of Fibonacci numbers with 16 distinct prime factors. 1
324, 350, 352, 408, 444, 448, 490, 495, 500, 513, 572, 592, 620, 732, 740, 765, 790, 804, 819, 884, 954, 975, 988, 996, 1010, 1085, 1107, 1136, 1206, 1208, 1215, 1225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

Blair Kelly, Fibonacci and Lucas Factorizations.

EXAMPLE

F(324) = 2^4 * 3^5 * 17 * 19 * 53 * 107 * 109 * 2269 * 3079 * 4373 * 5779 * 19441 * 11128427 * 62650261 * 1828620361 * 6782976947987 has 16 distinct prime factors, so 324 is in the sequence.

CROSSREFS

Cf. A114823-A114826, A114836-A114841, A117551.

Column k=16 of A303217.

Sequence in context: A006465 A272298 A088214 * A045287 A096526 A111278

Adjacent sequences:  A117547 A117548 A117549 * A117551 A117552 A117553

KEYWORD

hard,more,nonn

AUTHOR

Ryan Propper, Apr 26 2006

EXTENSIONS

a(25)-a(32) from Max Alekseyev, Aug 18 2013

STATUS

approved

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Last modified January 23 22:36 EST 2020. Contains 331177 sequences. (Running on oeis4.)