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 A105758 Indices of prime hexanacci (or Fibonacci 6-step) numbers A001592 (using offset -4). 3
 3, 36, 37, 92, 660, 6091, 8415, 11467, 13686, 38831, 49828, 97148 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS No other n < 30000. This sequence uses the convention of the Noe and Post reference. Their indexing scheme differs by 4 from the indices in A001592. Sequence A249635 lists the indices of the same primes (A105759) using the indexing scheme as defined in A001592. - Robert Price, Nov 02 2014 [Edited by M. F. Hasler, Apr 22 2018] a(13) > 3*10^5. - Robert Price, Nov 02 2014 LINKS Table of n, a(n) for n=1..12. 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. Eric Weisstein's World of Mathematics, Fibonacci n-Step Number FORMULA a(n) = A249635(n) - 4. A105759(n) = A001592(A249635(n)) = A001592(a(n) + 4). - M. F. Hasler, Apr 22 2018 MATHEMATICA a={1, 0, 0, 0, 0, 0}; lst={}; Do[s=Plus@@a; a=RotateLeft[a]; a[[ -1]]=s; If[PrimeQ[s], AppendTo[lst, n]], {n, 30000}]; lst CROSSREFS Cf. A105759 (prime Fibonacci 6-step numbers), A249635 (= a(n) + 4), A001592. Cf. A000045, A000073, A000078 (and A001631), A001591, A122189 (or A066178), A079262, A104144, A122265, A168082, A168083 (Fibonacci, tribonacci, tetranacci numbers and other generalizations). Cf. A005478, A092836, A104535, A105757, A105761, ... (primes in these sequence). Cf. A001605, A303263, A303264 (and A104534 and A247027), A248757 (and A105756), ... (indices of primes in A000045, A000073, A000078, ...). Sequence in context: A189216 A291213 A158301 * A214852 A113799 A072682 Adjacent sequences: A105755 A105756 A105757 * A105759 A105760 A105761 KEYWORD nonn,more AUTHOR T. D. Noe, Apr 22 2005 EXTENSIONS a(10)-a(12) from Robert Price, Nov 02 2014 Edited by M. F. Hasler, Apr 22 2018 STATUS approved

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Last modified December 5 23:11 EST 2023. Contains 367594 sequences. (Running on oeis4.)