Least k such that 10^n + k - 1 is the first of a pair of twin primes.

Terms

a(0) =2a(1) =2a(2) =20a(3) =8a(4) =152a(5) =38a(6) =140a(7) =38a(8) =8a(9) =278a(10) =818a(11) =62a(12) =1268a(13) =98a(14) =2372a(15) =1550a(16) =20a(17) =620a(18) =98a(19) =392a(20) =410a(21) =650a(22) =5528a(23) =2732a(24) =560a(25) =950a(26) =428a(27) =602a(28) =2798a(29) =1682