Primes consisting of a digit and a nonempty string of 9's (i.e., primes of the form k*10^m - 1, where k is any digit).
A141311
Primes consisting of a digit and a nonempty string of 9's (i.e., primes of the form k*10^m - 1, where k is any digit).
Terms
- a(0) =19a(1) =29a(2) =59a(3) =79a(4) =89a(5) =199a(6) =499a(7) =599a(8) =1999a(9) =2999a(10) =4999a(11) =8999a(12) =49999a(13) =59999a(14) =79999a(15) =199999a(16) =599999a(17) =799999a(18) =2999999a(19) =4999999a(20) =19999999a(21) =29999999a(22) =59999999a(23) =89999999a(24) =799999999a(25) =59999999999a(26) =79999999999
External references
- oeis: A141311