

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
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..54.
Blair Kelly, Fibonacci and Lucas Factorizations.


EXAMPLE

a(1)=84 because 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
Adjacent sequences: A114819 A114820 A114821 * A114823 A114824 A114825


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



