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A297776 Number of distinct runs in base-8 digits of n. 3
1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 3, 3, 3, 3, 3, 3, 2, 1, 2, 2, 2, 2, 2, 2, 3, 2, 2, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

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

1262656 in base-8: 1,0,0,1,0,0,1; five runs, of which 2 are distinct, so that a(1262656) = 2.

MATHEMATICA

b = 8; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]]

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

CROSSREFS

Cf. A043560 (number of runs, not necessarily distinct), A297770, A043535.

Sequence in context: A043534 A043559 A083165 * A043535 A043560 A276034

Adjacent sequences:  A297773 A297774 A297775 * A297777 A297778 A297779

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling, Jan 29 2018

STATUS

approved

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Last modified May 9 12:26 EDT 2021. Contains 343740 sequences. (Running on oeis4.)