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 A297779 #4 Feb 04 2018 12:42:06
%S A297779 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,
%T A297779 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,
%U A297779 2,2,2,1,2,2,2,2,2,2,2,2,2,2,2,1,2,2
%N A297779 Number of distinct runs in base-11 digits of n.
%C A297779 Every positive integers occurs infinitely many times. See A297770 for a guide to related sequences.
%H A297779 Clark Kimberling, <a href="/A297779/b297779.txt">Table of n, a(n) for n = 1..10000</a>
%e A297779 11! in base-11: 2,0,5,9,4,0,10,0; eight runs, of which 6 are distinct, so that a(11!) = 6.
%t A297779 b = 11; s[n_] := Length[Union[Split[IntegerDigits[n, b]]]]
%t A297779 Table[s[n], {n, 1, 200}]
%Y A297779 Cf. A043563 (number of runs, not necessarily distinct), A297770.
%K A297779 nonn,base,easy
%O A297779 1,11
%A A297779 _Clark Kimberling_, Feb 03 2018