|
| |
|
|
A090206
|
|
Nonprime Fibonacci numbers.
|
|
7
| |
|
|
0, 1, 1, 8, 21, 34, 55, 144, 377, 610, 987, 2584, 4181, 6765, 10946, 17711, 46368, 75025, 121393, 196418, 317811, 832040, 1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,4
|
|
|
COMMENTS
| It is possible to find a run of at least length n (not necessarily exactly n) such that n consecutive terms in this sequence are also consecutive in the sequence of Fibonacci numbers. However, it is not possible for such a run to be of exactly length n if n is even. (Alonso del Arte, (alonso.delarte(AT)gmail.com), Nov 23 2010)
|
|
|
MATHEMATICA
| Select[Fibonacci[Range[0, 50]], !PrimeQ[#]&] (* Vladimir Orlovsky, Jul 22 2008 *)
|
|
|
CROSSREFS
| Cf. A000045, A005478, A182602.
Sequence in context: A053750 A003249 A134862 * A139590 A154894 A179681
Adjacent sequences: A090203 A090204 A090205 * A090207 A090208 A090209
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Felix Tubiana (fat2(AT)columbia.edu), Jan 22 2004
|
| |
|
|
