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 A334225 #13 May 02 2020 15:57:56 %S A334225 3,4,5,23,140,290 %N A334225 The values n where A334148(n) = n. %C A334225 See A334148 for the definition of the sequence and a plot of other n values. %C A334225 There are no other values for n up to 1000000. As A334148(n) increase slowly for n, for example A334148(1000000) = 6655, it is almost certain that no other values exist. %H A334225 <a href="/index/Rea#Recaman">Index entries for sequences related to Recamán's sequence</a> %e A334225 3 is a term as starting from 3 the sequence of visited numbers is 3,2,0,3 and 3 is the first term to repeat. %e A334225 23 is a term as starting from 23 the sequence of visited numbers is 23,22,20,17,13,8,2,9,1,10,0,11,23 and 23 is the first term to repeat. %e A334225 290 is a term as starting from 290 the sequence of visited numbers is 290,289,287,284,280,275,269,262,254,245,235,224,212,199,185,170,154,137,119,100,80,59,37,14,38,13,39,12,40,11,41,10,42,9,43,8,44,7,45,6,46,5,47,4,48,3,49,2,50,1,51,0,52,105,159,104,160,103,161,102,162,101,163,226,290 and 290 is the first term to repeat. This is almost certainly the largest such value. %Y A334225 Cf. A005132, A334148, A334149, A334219. %K A334225 nonn,more %O A334225 0,1 %A A334225 _Scott R. Shannon_, Apr 19 2020