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 A110805 #20 Feb 26 2017 02:35:01
%S A110805 1,2,3,4,5,6,7,8,9,2,4,6,8,10,12,14,16,18,20,4,6,8,10,12,14,16,18,20,
%T A110805 22,6,8,10,12,14,16,18,20,22,24,8,10,12,14,16,18,20,22,24,26,10,12,14,
%U A110805 16,18,20,22,24,26,28,12,14,16,18,20,22,24,26,28,30
%N A110805 Sum of digits of n times number of digits of n.
%H A110805 Michael De Vlieger, <a href="/A110805/b110805.txt">Table of n, a(n) for n = 1..10000</a>
%e A110805 a(19) = 2 * (1 + 9) = 20.
%e A110805 a(1235) = 4 * (1 + 2 + 3 + 5) = 44.
%t A110805 Table[IntegerLength[n] * Total[IntegerDigits[n]], {n,50}] (* _Harvey P. Dale_, Jul 31 2012 *)
%o A110805 (PARI) a(n) = sumdigits(n) * #digits(n); \\ _Michel Marcus_, Feb 24 2017
%Y A110805 Cf. A007953, A055642.
%K A110805 base,easy,nonn
%O A110805 1,2
%A A110805 _Amarnath Murthy_, Aug 14 2005