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A297780 Number of distinct runs in base-12 digits of n. 3
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,12

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

3006865 in base-12: 1,0,1,0,1,0,1; seven runs, of which 2 are distinct, so that a(3006865) = 2.

MATHEMATICA

b = 12; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]]

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

CROSSREFS

Cf. A043564 (number of runs, not necessarily distinct), A297770.

Sequence in context: A297779 A043563 A043538 * A043564 A043539 A297781

Adjacent sequences:  A297777 A297778 A297779 * A297781 A297782 A297783

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling, Feb 03 2018

STATUS

approved

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Last modified May 15 17:50 EDT 2021. Contains 343920 sequences. (Running on oeis4.)