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A114837 Indices of Fibonacci numbers with 8 distinct prime factors. 3
60, 72, 110, 112, 114, 128, 130, 135, 147, 154, 170, 171, 174, 217, 225, 231, 236, 238, 275, 279, 282, 290, 309, 316, 338, 355, 366, 374, 425, 436, 442, 452, 471, 481, 524, 538, 548, 553, 575, 642, 649, 694, 796, 801, 818, 833, 838, 847, 849, 851, 886, 889, 922, 923, 926, 939, 949, 958, 963, 965, 971, 979, 1037, 1041, 1077, 1079, 1094, 1111, 1127, 1137, 1141, 1153, 1154, 1189, 1211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..87

Blair Kelly, Fibonacci and Lucas Factorizations.

EXAMPLE

a(1)=60 because 60th fibonacci number consists of 8 distinct prime factors (i.e. 1548008755920 = 2^4 x 3^2 x 5 x 11 x 31 x 41 x 61 x 2521)

PROG

(PARI) n=1; while(n<370, if(omega(fibonacci(n))==8, print1(n, ", ")); n++)

CROSSREFS

Cf. A114823-A114826, A114836-A114841.

Column k=8 of A303217.

Sequence in context: A030630 A068350 A265712 * A154548 A244384 A290018

Adjacent sequences:  A114834 A114835 A114836 * A114838 A114839 A114840

KEYWORD

nonn

AUTHOR

Shyam Sunder Gupta, Feb 19 2006

EXTENSIONS

More terms from Ryan Propper, Apr 26 2006

a(53)-a(75) from Max Alekseyev, Aug 18 2013

STATUS

approved

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Last modified May 26 16:52 EDT 2020. Contains 334627 sequences. (Running on oeis4.)