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 A262224 #4 Sep 15 2015 20:09:07 %S A262224 1,2,4,8,16,22,44,88,176,183,191,382,390,399,498,507,514,519,528,536, %T A262224 542,547,554,609,618,626,1252,1504,1509,1518,1669,1735,1742,1749,1758, %U A262224 1766,1832,1840,1848,2696,3392,3425,3430,3773,7546,7553,7608,7616,8232 %N A262224 a(n+1) = a(n) + (largest palindrome in decimal representation of a(n)), a(0) = 1. %C A262224 a(n+1) = a(n) + A047813(a(n)) = A262223(a(n)). %H A262224 Reinhard Zumkeller, <a href="/A262224/b262224.txt">Table of n, a(n) for n = 0..10000</a> %o A262224 (Haskell) %o A262224 a262224' n = a262224_list' !! n %o A262224 a262224_list' = iterate a262223 1 %Y A262224 Cf. A047813, A262223, A262243 (first differences). %K A262224 nonn,base %O A262224 0,2 %A A262224 _Reinhard Zumkeller_, Sep 15 2015