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 A267494 #18 Dec 19 2017 18:36:21 %S A267494 22,10213223,10311233,10313314,10313315,21322314,21322315,31123314, %T A267494 31123315,31331415,1031223314,1031223315,3122331415,10111121314, %U A267494 10111121315,10111121415,10111131415,11112131415,103142132415,104122232415,1011122131415 %N A267494 Autobiographical numbers in base 6: numbers which are fixed or belong to a cycle under the operator T. %C A267494 The T operator numerically summarizes the frequency of digits 0 through 5 in that order when they occur in a number. The numbers and the frequency are written in base 6. %C A267494 These are all autobiographical numbers in base 6 which lead to a fixed-point or belong to a cycle. %C A267494 There is one cycle with length 2 (103142132415, 104122232415), all other numbers are fixed-points. %D A267494 Antonia Münchenbach and Nicole Anton George, "Eine Abwandlung der Conway-Folge", contribution to "Jugend forscht" 2016, 2016 %H A267494 Andre Kowacs, <a href="https://arxiv.org/abs/1708.06452">Studies on the Pea Pattern Sequence</a>, arXiv:1708.06452 [math.HO], 2017. %e A267494 10213223 contains one 0, two 1's, three 2's and two 3's, so T(10213223) = 1 0 2 1 3 2 2 3, and this is fixed under T. %e A267494 103142132415 and 104122232415 belong to the cycle of length 2, so %e A267494 T(T(103142132415)) = T(1 0 4 1 2 2 2 3 2 4 1 5) = 1 0 3 1 4 2 1 3 2 4 1 5. %Y A267494 Cf. A047841, A267491, A267492, A267493, A267494, A267495, A267496, A267497, A267498, A267499, A267500, A267502. %K A267494 nonn,base,fini,full %O A267494 1,1 %A A267494 _Antonia Münchenbach_, Jan 16 2016