The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A297777 Number of distinct runs in base-9 digits of n. 3
 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,9 COMMENTS Every positive integers occurs infinitely many times. See A297770 for a guide to related sequences. LINKS Clark Kimberling, Table of n, a(n) for n = 1..10000 EXAMPLE 6643 in base-9: 1,0,1,0,1; five runs, of which 2 are distinct, so that a(6643) = 2. MATHEMATICA b = 9; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]] Table[s[n], {n, 1, 200}] CROSSREFS Cf. A043561 (number of runs, not necessarily distinct), A297770. Sequence in context: A043560 A276034 A111626 * A043536 A043561 A297778 Adjacent sequences: A297774 A297775 A297776 * A297778 A297779 A297780 KEYWORD nonn,base,easy AUTHOR Clark Kimberling, Jan 29 2018 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 30 21:14 EST 2023. Contains 367462 sequences. (Running on oeis4.)