List of words of length n over an alphabet of size 9 that are in standard order and which have the property that every letter that appears in the word is repeated.
A273978
List of words of length n over an alphabet of size 9 that are in standard order and which have the property that every letter that appears in the word is repeated.
Terms
- a(0) =11a(1) =111a(2) =1111a(3) =1122a(4) =1212a(5) =1221a(6) =11111a(7) =11122a(8) =11212a(9) =11221a(10) =11222a(11) =12112a(12) =12121a(13) =12122a(14) =12211a(15) =12212a(16) =12221a(17) =111111a(18) =111122a(19) =111212a(20) =111221a(21) =111222a(22) =112112a(23) =112121a(24) =112122a(25) =112211a(26) =112212a(27) =112221a(28) =112222a(29) =112233
External references
- oeis: A273978