Least positive number k such that k*n written in base 10 is either a repunit or of the form 1111....0000.
A244927
Least positive number k such that k*n written in base 10 is either a repunit or of the form 1111....0000.
Terms
- a(0) =1a(1) =5a(2) =37a(3) =25a(4) =2a(5) =185a(6) =15873a(7) =125a(8) =12345679a(9) =1a(10) =1a(11) =925a(12) =8547a(13) =79365a(14) =74a(15) =625a(17) =61728395a(19) =5a(20) =5291a(21) =5a(23) =4625a(24) =4a(25) =42735a(27) =396825a(29) =37a(31) =3125a(32) =3367
External references
- oeis: A244927