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A153890 Second-to-largest of five consecutive Fibonacci numbers such that sum of five consecutive Fibonacci numbers is prime number. 3

%I #2 Mar 31 2012 12:38:18

%S 2,5,8,34,377,610,10946,514229,832040,3524578,86267571272,

%T 17167680177565,37889062373143906,420196140727489673,

%U 12200160415121876738,59425114757512643212875125

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

%C 0+1+1+2=3=7, 1+2+3+5+8=19, 2+3+5+8=13=31, 8+13+21+34+55=131, 89+144+233+377+610=1453, 144+233+377+610+987=2351,...

%t a=0;b=1;c=1;d=2;lst={};Do[e=Fibonacci[n];p=a+b+c+d+e;If[PrimeQ[p],AppendTo[lst,d]];a=b;b=c;c=d;d=e,{n,4,6!}];lst

%Y Cf. A000045, A001906, A000071, A001605, A153862, A153863, A153865, A153866, A153867, A153887, A153888, A153889

%K nonn

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Jan 03 2009

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Last modified April 27 05:20 EDT 2024. Contains 372009 sequences. (Running on oeis4.)