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

Terms

a(0) =3a(1) =4a(2) =6a(3) =7a(4) =10a(5) =12a(6) =13a(7) =19a(8) =23a(9) =26a(10) =32a(11) =63a(12) =95a(13) =150a(14) =324a(15) =449a(16) =1969a(17) =2988a(18) =6199a(19) =8093a(20) =23393a(21) =25427a(22) =34685a(23) =35076a(24) =44171a(25) =45624a(26) =83357a(27) =116404