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 A273239 #17 May 20 2016 05:52:41 %S A273239 10,20,30,40,50,60,70,80,90,100,110,200,220,300,330,400,440,500,550, %T A273239 600,660,700,770,800,880,900,990,1000,1010,1100,1110,1210,1310,1410, %U A273239 1510,1610,1710,1810,1910,2000,2020,2120,2200,2220,2320,2420,2520,2620,2720,2820,2920 %N A273239 Non-palindromic numbers whose reversal is a palindrome. %C A273239 Subsequence of A118959. - _Altug Alkan_, May 18 2016 %H A273239 Alois P. Heinz, <a href="/A273239/b273239.txt">Table of n, a(n) for n = 1..10000</a> %Y A273239 Cf. A118959, A273245. %K A273239 nonn,easy,base %O A273239 1,1 %A A273239 _Giovanni Teofilatto_, May 18 2016 %E A273239 More terms from _Altug Alkan_, May 18 2016