|
| |
|
|
A206098
|
|
Fibonacci numbers F with 3 distinct prime divisors, and F+3 or F-3 also with 3 distinct prime divisors.
|
|
0
|
|
|
|
9227465, 7778742049, 17167680177565, 1500520536206896083277, 3311648143516982017180081, 50095301248058391139327916261, 898923707008479989274290850145, 23770696554372451866815101694984845480039225387896643963981
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Table of n, a(n) for n=1..8.
|
|
|
EXAMPLE
|
9227465=5*13*141961; (9227465+2)=37*113*2207.
|
|
|
MATHEMATICA
|
Select[Fibonacci[Range[300]], Last/@FactorInteger[#]=={1, 1, 1} && (Last/@FactorInteger[#+3]=={1, 1, 1} || Last/@FactorInteger[#-3]=={1, 1, 1})&]
|
|
|
CROSSREFS
|
Cf. A000045
Sequence in context: A187675 A205615 A206599 * A105175 A212469 A204510
Adjacent sequences: A206095 A206096 A206097 * A206099 A206100 A206101
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
Vladimir Joseph Stephan Orlovsky, Feb 03 2012
|
|
|
STATUS
|
approved
|
| |
|
|
