|
| |
|
|
A135954
|
|
(Nonprime Fibonacci numbers with prime indices, A050937) which have exactly 3 prime factors.
|
|
7
| |
|
|
24157817, 44945570212853, 1500520536206896083277, 50095301248058391139327916261, 11463113765491467695340528626429782121, 3001082145496345390753066714782948988
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Conjecture: All numbers in this sequence are products of three sums of two squares.
|
|
|
MATHEMATICA
| k = {}; Do[If[ !PrimeQ[Fibonacci[Prime[n]]], c = Length[FactorInteger[Fibonacci[Prime[n]]]]; If[c == 3, AppendTo[k, Fibonacci[Prime[n]]]]], {n, 1, 50}]; k
|
|
|
CROSSREFS
| Cf. A000045, A001605, A050937, A075737, A090819, A134787, A134851, A134852, A135953, A135955, A135956, A135957.
Sequence in context: A132906 A104922 A058323 * A203260 A183791 A115533
Adjacent sequences: A135951 A135952 A135953 * A135955 A135956 A135957
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Dec 08 2007
|
| |
|
|
