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A114822
Indices of Fibonacci numbers with 13 prime factors when counted with multiplicity.
1
84, 132, 156, 162, 224, 234, 260, 354, 364, 368, 405, 434, 438, 455, 472, 512, 536, 584, 585, 595, 610, 615, 645, 693, 741, 775, 777, 822, 830, 834, 867, 904, 931, 957, 962, 1001, 1025, 1045, 1066, 1070, 1102, 1106, 1108, 1146, 1147, 1158, 1209, 1268, 1309, 1310, 1317, 1334, 1335, 1388
OFFSET
1,1
EXAMPLE
a(1)=84 because the 84th Fibonacci number (i.e., 160500643816367088) consists of 13 prime factors (i.e., 2*2*2*2*3*3*13*29*83*211*281*421*1427).
PROG
(PARI) n=1; while(n<360, if(bigomega(fibonacci(n))==13, print1(n, ", ")); n++)
CROSSREFS
Column k=13 of A303215.
Sequence in context: A227734 A192322 A015708 * A099637 A274348 A143758
KEYWORD
hard,nonn
AUTHOR
Shyam Sunder Gupta, Feb 19 2006
EXTENSIONS
More terms from Ryan Propper, May 24 2006
More terms from Amiram Eldar, Oct 14 2019
STATUS
approved