This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A297782 #6 Jul 24 2023 11:44:43
%S A297782 1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,
%T A297782 2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,
%U A297782 2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,2,2,2
%N A297782 Number of distinct runs in base-14 digits of n.
%C A297782 Every positive integers occurs infinitely many times. See A297770 for a guide to related sequences.
%C A297782 Starts to differ from A043541 at n=2759. - _R. J. Mathar_, Jul 24 2023
%H A297782 Clark Kimberling, <a href="/A297782/b297782.txt">Table of n, a(n) for n = 1..10000</a>
%e A297782 8070300 in base-14: 1,1,0,1,1,0,0; four runs, of which 3 are distinct, so that a(8070300) = 3.
%t A297782 b = 14; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]]
%t A297782 Table[s[n], {n, 1, 200}]
%Y A297782 Cf. A043566 (number of runs, not necessarily distinct), A297770.
%K A297782 nonn,base,easy
%O A297782 1,14
%A A297782 _Clark Kimberling_, Feb 03 2018