A157611 Numbers n such that the n-th tribonacci number as defined by A000213 is prime.

3, 4, 6, 7, 10, 12, 13, 19, 23, 26, 32, 63, 95, 150, 324, 449, 1969, 2988, 6199, 8093, 23393, 25427, 34685, 35076, 44171, 45624, 83357, 116404

Offset: 1

Author

Dmitry Kamenetsky, Mar 03 2009

Keywords

• nonn

Comments

The next term is greater than 10000.

a(29) > 2*10^5. - Robert Price, Nov 15 2013

Crossrefs

Cf. A000213, A056816.

Extensions

a(21)-a(28) from Robert Price, Nov 15 2013