A114826 - OEIS

A114826

Indices of Fibonacci numbers with 10 distinct prime factors.

90, 126, 165, 256, 258, 266, 296, 304, 322, 369, 375, 376, 424, 428, 429, 474, 484, 494, 506, 574, 578, 589, 633, 646, 652, 658, 663, 664, 668, 669, 670, 687, 703, 705, 716, 724, 742, 754, 779, 782, 807, 845, 875, 892, 906, 909, 921, 946, 956, 964, 986, 1004, 1054, 1075, 1084, 1119, 1126, 1132, 1149, 1169, 1171, 1214, 1222, 1227

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..69

Blair Kelly, Fibonacci and Lucas Factorizations.

EXAMPLE

a(1)=90 because the 90th Fibonacci number (i.e., 2880067194370816120) consists of 10 distinct prime factors (i.e., 2^3 * 5 * 11 * 17 * 19 * 31 * 61 * 181 * 541 * 109441).

PROG

(PARI) n=1; while(n<305, if(omega(fibonacci(n))==10, print1(n, ", ")); n++)

CROSSREFS

Cf. A114823-A114826, A114836-A114841.

Column k=10 of A303217.

Sequence in context: A135197 A025371 A025362 * A332725 A253385 A332831

Adjacent sequences: A114823 A114824 A114825 * A114827 A114828 A114829

KEYWORD

nonn

AUTHOR

Shyam Sunder Gupta, Feb 19 2006

EXTENSIONS

More terms from Ryan Propper, Apr 26 2006

a(52)-a(64) from Max Alekseyev, Aug 18 2013

STATUS

approved