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A114824 Indices of Fibonacci numbers with 12 distinct prime factors. 3
176, 192, 198, 224, 297, 315, 364, 385, 410, 430, 441, 455, 496, 555, 582, 606, 609, 621, 627, 638, 682, 710, 711, 726, 729, 734, 759, 775, 805, 814, 826, 846, 854, 897, 903, 908, 932, 935, 981, 987, 994, 1001, 1002, 1022, 1025, 1067, 1086, 1089, 1105, 1244, 1246 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..56

Blair Kelly, Fibonacci and Lucas Factorizations.

EXAMPLE

a(1)=176 because 176th Fibonacci number (i.e. 2706074082469569338358691163510069157) consists of 12 distinct prime factors (i.e. 3 * 7 * 43 * 47 * 89 * 199 * 263 * 307 * 881 * 967 * 93058241 * 56241856)

MATHEMATICA

Flatten[Position[Fibonacci[Range[1110]], _?(PrimeNu[#]==12&)]] (* Harvey P. Dale, Jan 17 2015 *)

PROG

(PARI) n=1; while(n<320, if(omega(fibonacci(n))==12, print1(n, ", ")); n++)

CROSSREFS

Column k=12 of A303217.

Sequence in context: A266058 A261678 A136603 * A305062 A063344 A075291

Adjacent sequences:  A114821 A114822 A114823 * A114825 A114826 A114827

KEYWORD

hard,nonn

AUTHOR

Shyam Sunder Gupta, Feb 19 2006

EXTENSIONS

More terms from Ryan Propper, Apr 26 2006

a(42)-a(49) from Max Alekseyev, Aug 17 2013

a(50)-a(51) from Amiram Eldar, Oct 14 2019

STATUS

approved

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Last modified July 9 11:58 EDT 2020. Contains 335543 sequences. (Running on oeis4.)