A235862 - OEIS

A235862

Indices of primes in A141523.

0, 3, 4, 5, 8, 10, 14, 16, 24, 30, 40, 54, 63, 66, 67, 109, 188, 203, 421, 463, 704, 730, 798, 1155, 1259, 1376, 1789, 2095, 2650, 3833, 4538, 4794, 4840, 5386, 8348, 15176, 17282, 21250, 21386, 21825, 31242, 32843, 33706, 37026, 47546, 66848

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OFFSET

1,2

COMMENTS

a(47) > 2*10^5.

LINKS

Table of n, a(n) for n=1..46.

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={3, 1, 1}; Print[0]; 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.

Sequence in context: A278998 A211533 A079136 * A228305 A103329 A079347

Adjacent sequences: A235859 A235860 A235861 * A235863 A235864 A235865

KEYWORD

nonn

AUTHOR

Robert Price, Jan 16 2014

EXTENSIONS

Name clarified by Arthur O'Dwyer, Jul 25 2024

STATUS

approved