Number of near-repunit primes that can be formed from (10^k - 1)/9 by changing just one digit from 1 to 0.
A034093
Number of near-repunit primes that can be formed from (10^k - 1)/9 by changing just one digit from 1 to 0.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =2a(8) =1a(9) =0a(10) =0a(11) =5a(12) =0a(13) =0a(14) =0a(15) =0a(16) =2a(17) =5a(18) =0a(19) =4a(20) =0a(21) =0a(22) =0a(23) =3a(24) =0a(25) =1a(26) =0a(27) =0a(28) =1a(29) =2
External references
- oeis: A034093