Numbers whose digits are nondecreasing and which have exactly d digits "d" whenever there is at least one digit "d".
A247701
Numbers whose digits are nondecreasing and which have exactly d digits "d" whenever there is at least one digit "d".
Terms
- a(0) =1a(1) =22a(2) =122a(3) =333a(4) =1333a(5) =4444a(6) =14444a(7) =22333a(8) =55555a(9) =122333a(10) =155555a(11) =224444a(12) =666666a(13) =1224444a(14) =1666666a(15) =2255555a(16) =3334444a(17) =7777777a(18) =12255555a(19) =13334444a(20) =17777777a(21) =22666666a(22) =33355555a(23) =88888888a(24) =122666666a(25) =133355555a(26) =188888888a(27) =223334444a(28) =227777777a(29) =333666666
External references
- oeis: A247701