Least k such that k*5^n +/- 1 are twin primes.

Terms

a(0) =4a(1) =6a(2) =6a(3) =24a(4) =42a(5) =42a(6) =18a(7) =198a(8) =42a(9) =54a(10) =96a(11) =84a(12) =522a(13) =240a(14) =48a(15) =228a(16) =708a(17) =732a(18) =660a(19) =132a(20) =528a(21) =390a(22) =78a(23) =1014a(24) =504a(25) =1008a(26) =1134a(27) =504a(28) =708a(29) =582