Values of k such that k - 1 and k + 1 are twin primes and 3*k^9 - 1 and 3*k^9 + 1 are also twin primes.
A108134
Values of k such that k - 1 and k + 1 are twin primes and 3*k^9 - 1 and 3*k^9 + 1 are also twin primes.
Terms
- a(0) =4a(1) =270a(2) =37200a(3) =57900a(4) =63690a(5) =80910a(6) =150960a(7) =256470a(8) =367230a(9) =405990a(10) =577980a(11) =641580a(12) =706920a(13) =1479480a(14) =1547880a(15) =1730580a(16) =2026470a(17) =2081160a(18) =2210280a(19) =2374530a(20) =2423040a(21) =2583240a(22) =3090780a(23) =3437220a(24) =3510810a(25) =4140420a(26) =4441530a(27) =4847460
External references
- oeis: A108134