login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A153863 Second-to-smallest of four consecutive Fibonacci numbers such that sum of four consecutive Fibonacci numbers is prime number. 10

%I #5 Aug 28 2016 10:48:41

%S 1,2,5,8,34,89,377,610,1597,514229,9227465,63245986,1134903170,

%T 20365011074,956722026041,117669030460994,5527939700884757,

%U 70492524767089125814114,44225333398004061429732838340729878012027363723832270745251370289

%N Second-to-smallest of four consecutive Fibonacci numbers such that sum of four consecutive Fibonacci numbers is prime number.

%C 1+1+2+3=7, 1+2+3+5=11, 3+5+8+13=29, 5+8+13+21=47, 21+34+55+89=199,...

%H Harvey P. Dale, <a href="/A153863/b153863.txt">Table of n, a(n) for n = 1..27</a>

%t a=0;b=1;c=1;lst={};Do[d=Fibonacci[n];p=a+b+c+d;If[PrimeQ[p],AppendTo[lst,b]];a=b;b=c;c=d,{n,3,6!}];lst

%t Select[Partition[Fibonacci[Range[200]],4,1],PrimeQ[Total[#]]&][[All,2]] (* _Harvey P. Dale_, Aug 28 2016 *)

%Y Cf. A000045, A001906, A000071, A001605, A153862

%K nonn

%O 1,2

%A _Vladimir Joseph Stephan Orlovsky_, Jan 03 2009

%E One more term from _Harvey P. Dale_, Aug 28 2016

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 16 01:01 EDT 2024. Contains 371696 sequences. (Running on oeis4.)