A092835 Indices of prime tribonacci numbers, minus 1.

3, 5, 6, 10, 86, 97, 214, 801, 4201, 18698, 96878

Offset

1,1

Comments

The prime for n=96878 was found by Kamil Duszenko. - T. D. Noe, Mar 08 2005

a(12) > 6*10^5. - Robert Price, Nov 21 2013

Links

Table of n, a(n) for n=1..11.

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, Tribonacci Number

Eric Weisstein's World of Mathematics, Integer Sequence Primes

Formula

A000073(a(n)+1) = A092836(n). - Ray Chandler and Jonathan Vos Post, Dec 26 2004

Crossrefs

Cf. A000073, A092836.

Sequence in context: A290269 A115059 A250218 * A335403 A327433 A358866

Adjacent sequences: A092832 A092833 A092834 * A092836 A092837 A092838

Keyword

nonn

Author

Eric W. Weisstein, Mar 06 2004

Extensions

2 more terms from T. D. Noe, Mar 08 2005

Status

approved