Least positive integer not representable using exactly n 9's and the operations +-*/().
A066409
Least positive integer not representable using exactly n 9's and the operations +-*/().
Terms
- a(0) =1a(1) =2a(2) =1a(3) =4a(4) =13a(5) =22a(6) =33a(7) =103a(8) =195a(9) =381a(10) =934a(11) =1858a(12) =3747a(13) =9166a(14) =31279
External references
- oeis: A066409