

A328734


Fibonacci numbers F(k) for k in A328733.


1



1, 2, 3, 21, 34, 610, 196418, 24157817, 39088169, 701408733, 72723460248141, 2427893228399975082453, 781774079430987230203437, 36726740705505779255899443, 150804340016807970735635273952047185, 453973694165307953197296969697410619233826
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..16.
Blair Kelly, Fibonacci factorizations up to 1000 terms


EXAMPLE

The Fibonacci numbers (A000045) start 0,1,1,2,3,5,8,13,21,..., so the first 1 is a term here, but the second 1 is not. (Note that 0 has infinitely many prime divisors.)
21 = 3 * 7 and 34 = 2 * 17 both have two prime factors, and because they are contiguous in the Fibonacci sequence, 21 is included.


CROSSREFS

Cf. A000045, A038575, A328733 (indices).
Sequence in context: A282340 A248953 A090122 * A296254 A114749 A141458
Adjacent sequences: A328731 A328732 A328733 * A328735 A328736 A328737


KEYWORD

nonn


AUTHOR

Tomás Roca Sánchez, Oct 26 2019


EXTENSIONS

Edited to avoid confusion caused by the pair of 1's in the Fibonacci sequence.  N. J. A. Sloane, Nov 11 2019


STATUS

approved



