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 A182324 #18 Mar 17 2023 04:10:54 %S A182324 0,2,4,6,8,10,12,14,16,18,11,12,13,14,15,16,17,18,19,20,22,23,24,25, %T A182324 26,27,28,29,30,31,33,34,35,36,37,38,39,40,41,42,44,45,46,47,48,49,50, %U A182324 51,52,53,55,56,57,58,59,60,61,62,63,64,66,67,68,69,70,71 %N A182324 n + (initial digit of n) in decimal representation. %C A182324 A061681 gives iteration when starting with 1. %H A182324 Reinhard Zumkeller, <a href="/A182324/b182324.txt">Table of n, a(n) for n = 0..10000</a> %F A182324 a(n) = n + A000030(n). %o A182324 (Haskell) %o A182324 a182324 n = n + a000030 n %o A182324 (Magma) [0] cat [n+d[#d] where d is Intseq(n): n in [1..65]]; // _Bruno Berselli_, Apr 25 2012 %Y A182324 Cf. A000030, A061681, A095815. %K A182324 nonn,base,easy %O A182324 0,2 %A A182324 _Reinhard Zumkeller_, Apr 24 2012