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 A349248 #13 Jan 14 2023 17:24:39
%S A349248 21,22,30,102,110,111,200,1001
%N A349248 Numbers which are elements of a cycle under iterations of the digit-census function A348783.
%C A349248 Next term a(9) > 10^6.
%C A349248 There are no other terms. There are none < 10^10 from computer search and A348783(k) < k for all k >= 10^10. - _Michael S. Branicky_, Nov 18 2021
%F A349248 n is in this sequence iff A349249(n) = 0.
%o A349248 (PARI) select( {is_A349248(n)=!A349249(n)}, [0..1111])
%Y A349248 Cf. A348783, A349249 (length of transit to limit cycle), A349250 (size of the full orbit).
%K A349248 nonn,base,fini,full
%O A349248 1,1
%A A349248 _M. F. Hasler_, Nov 17 2021