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A297779 Number of distinct runs in base-11 digits of n. 3
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,11

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

11! in base-11: 2,0,5,9,4,0,10,0; eight runs, of which 6 are distinct, so that a(11!) = 6.

MATHEMATICA

b = 11; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]]

Table[s[n], {n, 1, 200}]

CROSSREFS

Cf. A043563 (number of runs, not necessarily distinct), A297770.

Sequence in context: A043562 A043537 A047726 * A043563 A043538 A297780

Adjacent sequences:  A297776 A297777 A297778 * A297780 A297781 A297782

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling, Feb 03 2018

STATUS

approved

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Last modified February 21 23:29 EST 2019. Contains 320381 sequences. (Running on oeis4.)