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 A383931 #14 May 29 2025 00:15:18
%S A383931 613200,100123,100012,10,1023,100,0,10234,10000123,10000000000002
%N A383931 Minimal nonnegative integer which reaches a cycle after exactly n iterations of the modified Sisyphus function of order 5 (A375208).
%C A383931 The sole cycle is C = {613200,622110} and iteration stops on reaching either element of this cycle.
%C A383931 The next term is 145 digits a(10) = decimal 1 0^(101) 1^(10) 2^(11) 3^(11) 4^(11) where ^ denotes repetition of a digit.
%D A383931 J. Schram, The Sisyphus string, J. Recreational Math., 19 (1987), 43-44.
%H A383931 M. E. Coppenbarger, <a href="https://www.fq.math.ca/Papers1/56-2/coppenbarger03242018.pdf">Iterations of a modified Sisyphus function</a>, Fib. Q., 56 (No. 2, 2018), 130-141.
%e A383931 For n=6, a(6) = 0 takes 6 iterations to reach C: 0 -> 110000 -> 642000 -> 631101 -> 614010 -> 632001 -> 6221100.
%Y A383931 Cf. A375208 (Sisyphus 5 function).
%Y A383931 Cf. A308002, A352752.
%K A383931 nonn,base
%O A383931 0,1
%A A383931 _Matt Coppenbarger_, May 15 2025