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 A135384 #12 Jun 08 2024 15:44:40 %S A135384 642,2164,2534,2592,3425,6421,9225,10642,11642,12642,13642,14642, %T A135384 15642,16642,17642,18642,19642,20642,21636,21641,22348,22633,22928, %U A135384 23344,23629,23924,24336,24342,24922,25329,25333,25341,25919,25921,30642,31634,32259 %N A135384 Numbers which converge to 2592 under repeated application of the powertrain map of A133500. %C A135384 Many of these numbers reach 2592 in one step. Examples of numbers which take more than one step are 45756, 52648, 63724, 64528, 72634, 75456. %H A135384 N. J. A. Sloane, <a href="/A135384/b135384.txt">Table of n, a(n) for n = 1..169</a> %o A135384 (Python) # aupto in A326735 %o A135384 print(aupto(32259, target=2592)) # _Michael S. Branicky_, Feb 21 2021 %Y A135384 Cf. A133500, A135385. %K A135384 nonn,base %O A135384 1,1 %A A135384 _J. H. Conway_ and _N. J. A. Sloane_, Dec 10 2007