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 A297781 Number of distinct runs in base-13 digits of n. 3
 1, 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, 2, 1, 2, 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, 2, 1, 2, 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, 2, 1, 2, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,13 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 5200468 in base-13: 1,1,0,1,1,0,0; four runs, of which 3 are distinct, so that a(5200468) = 3. MATHEMATICA b = 13; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]] Table[s[n], {n, 1, 200}] CROSSREFS Cf. A043565 (number of runs, not necessarily distinct), A297770. Sequence in context: A297780 A043564 A043539 * A043565 A043540 A297782 Adjacent sequences:  A297778 A297779 A297780 * A297782 A297783 A297784 KEYWORD nonn,base,easy AUTHOR Clark Kimberling, Feb 03 2018 STATUS approved

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Last modified March 19 17:21 EDT 2019. Contains 321330 sequences. (Running on oeis4.)