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%I #15 Sep 11 2014 08:49:42
%S 3,4,7,19,62,94,722,5197,5262,6182,14007,21579,35354,75592
%N Indices of primes in A001630.
%C a(15) > 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={0,0,1,2}; Print[3]; For[n=4, n<=1000, n++, sum=Plus@@a; If[PrimeQ[sum], Print[n]]; a=RotateLeft[a]; a[[4]]=sum]
%Y Cf. A001590, A100683, A231574, A231575, A232542, A214899, A230607, A020992, A232498, A214727, A081172, A214752, A141523,A214825, A235862.
%K nonn
%O 1,1
%A _Robert Price_, Apr 26 2014
%E Prepended a(1)=3 and Mathematica program corrected by _Robert Price_, Sep 09 2014