Lexicographically earliest increasing sequence of numbers with all odd digits alternating with numbers with all even digits.
A180412
Lexicographically earliest increasing sequence of numbers with all odd digits alternating with numbers with all even digits.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =20a(10) =31a(11) =40a(12) =51a(13) =60a(14) =71a(15) =80a(16) =91a(17) =200a(18) =311a(19) =400a(20) =511a(21) =600a(22) =711a(23) =800a(24) =911a(25) =2000a(26) =3111a(27) =4000a(28) =5111a(29) =6000
External references
- oeis: A180412