A243622 Indices of primes in A214829.

1, 2, 4, 10, 11, 12, 13, 58, 63, 89, 132, 157, 426, 457, 506, 613, 1839, 1936, 2042, 2355, 3178, 3782, 8556, 8688, 22152, 23232, 44074, 71770, 222666

Offset

1,2

Comments

a(30) > 222666.

Links

Table of n, a(n) for n=1..29.

Tony D. Noe and Jonathan Vos Post, Primes in Fibonacci n-step and Lucas n-step Sequences, J. of Integer Sequences, Vol. 8 (2005), Article 05.4.4

Mathematica

a={1, 7, 7}; Print["1"]; Print["2"]; For[n=3, n<=1000, n++, sum=Plus@@a; If[PrimeQ[sum], Print[n]]; a=RotateLeft[a]; a[[3]]=sum]

Crossrefs

Cf. A001590, A100683, A231574, A231575, A232542, A214899, A230607, A020992, A232498, A214727, A081172, A214752, A141523,A214825, A235862, A214827, A214828.

Sequence in context: A185372 A186757 A184876 * A178713 A136818 A293556

Adjacent sequences: A243619 A243620 A243621 * A243623 A243624 A243625

Keyword

nonn,more

Author

Robert Price, Jun 07 2014

Extensions

a(27) corrected by Robert Price, May 22 2019

a(29) from Robert Price, May 23 2019

Status

approved