Indices of primes in the tribonacci-like sequence, A081172.

A235396

Indices of primes in the tribonacci-like sequence, A081172.

Terms

    a(0) =3a(1) =4a(2) =5a(3) =9a(4) =12a(5) =16a(6) =24a(7) =32a(8) =101a(9) =116a(10) =245a(11) =34553a(12) =52517a(13) =99245a(14) =140197

External references