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Indices of primes in the 8th-order Fibonacci number sequence, A123526.
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%I #8 Feb 06 2015 10:45:41

%S 11,13,15,24,30,33,57,104,121,132,149,158,178,220,295,389,1070,1101,

%T 1373,1761,1778,2333,2731,4541,5189,5237,5738,8025,8787,10561,11783,

%U 13435,14638,15337,20985,21722,24770,31009,57367,65877,129773,134630,167020

%N Indices of primes in the 8th-order Fibonacci number sequence, A123526.

%C a(44) > 2*10^5.

%H Tony D. Noe and Jonathan Vos Post, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL8/Noe/noe5.html">Primes in Fibonacci n-step and Lucas n-step Sequences</a>, J. of Integer Sequences, Vol. 8 (2005), Article 05.4.4

%t a={1,1,1,1,1,1,1,1}; step=8; lst={}; For[n=step+1,n<=1000,n++, sum=Plus@@a; If[PrimeQ[sum], AppendTo[lst,n]]; a=RotateLeft[a]; a[[step]]=sum]; lst

%Y Cf. A001590, A001631, A100683, A231574, A231575, A232542, A214899, A230607, A020992, A232498, A214727, A081172, A214752, A141523, A214825, A235862, A000288, A000322, A000383, A249413, A060455, A079262, A123526, A254413.

%K nonn,more

%O 1,1

%A _Robert Price_, Jan 30 2015