Numbers such that each decimal digit d (for all d in the range 1 <= d <= 9) occurs only in runs of length exactly d.
A140057
Numbers such that each decimal digit d (for all d in the range 1 <= d <= 9) occurs only in runs of length exactly d.
Terms
- a(0) =1a(1) =22a(2) =122a(3) =221a(4) =333a(5) =1221a(6) =1333a(7) =3331a(8) =4444a(9) =13331a(10) =14444a(11) =22122a(12) =22333a(13) =33322a(14) =44441a(15) =55555a(16) =122122a(17) =122333a(18) =133322a(19) =144441a(20) =155555a(21) =221221a(22) =221333a(23) =223331a(24) =224444a(25) =333122a(26) =333221a(27) =444422a(28) =555551a(29) =666666
External references
- oeis: A140057