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 A167832 #7 Mar 15 2014 10:39:57 %S A167832 0,2,4,6,8,9,9,9,9,9,20,22,24,26,28,29,29,29,29,29,40,42,44,46,48,49, %T A167832 49,49,49,49,60,62,64,66,68,69,69,69,69,69,80,82,84,86,88,89,89,89,89, %U A167832 89,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99 %N A167832 A167831(n) + n. %C A167832 No carry occurs when calculating a(n) by adding A167831(n) to n in decimal arithmetic. %H A167832 R. Zumkeller, <a href="/A167832/b167832.txt">Table of n, a(n) for n = 0..9999</a> %o A167832 (Haskell) %o A167832 b167832 n = a167831 n + n -- _Reinhard Zumkeller_, Mar 15 2014 %Y A167832 Cf. A167878, A003817 for the ternary and binary cases. %K A167832 base,nonn,look %O A167832 0,2 %A A167832 _Reinhard Zumkeller_, Nov 14 2009