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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
OFFSET
1,1
EXAMPLE
a(1)=60 because the 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
Column k=8 of A303217.
Sequence in context: A335935 A347935 A347938 * A328149 A154548 A244384
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