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 A243359 #24 Feb 02 2023 05:07:46 %S A243359 1,1,5,3,4,2,2,4,3,5,1,1,5,3,4,2,2,4,3,5,1,1,5,3,4,2,2,4,3,5,1,1,5,3, %T A243359 4,2,2,4,3,5,1,1,5,3,4,2,2,4,3,5,1,1,5,3,4,2,2,4,3,5,1,1,5,3,4,2,2,4, %U A243359 3,5,1,1,5,3,4,2,2,4,3,5,1 %N A243359 Number of steps it takes the terms in A029742 and their reversals to reach the value 9 when the smaller term is successively subtracted from the larger term. %C A243359 Sequence appears to be periodic with period 10, although I don't have a proof for this property. %C A243359 If the successive subtraction algorithm is applied to the terms of A002113, the resulting value is always 0 after one iteration, therefore only the values resulting from the terms of that sequence's complement A029742 are taken into account for this sequence. %e A243359 For 14: 41 - 14 = 27 --> 72 - 27 = 45 --> 54 - 45 = 9 takes three steps to reach 9, therefore a(4) = 3. %K A243359 nonn,base %O A243359 1,3 %A A243359 _Felix Fröhlich_, Jun 03 2014 %E A243359 Extended by _Ray Chandler_, Aug 27 2015