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 A065518 #16 Dec 04 2024 15:40:28 %S A065518 1,1,1,1,1,1,1,1,1,1,2,1,4,5,2,7,8,1,10,1,1,2,5,1,7,4,1,5,11,1,4,5,2, %T A065518 7,8,1,10,11,4,1,5,1,7,2,1,5,11,1,13,1,2,7,8,1,2,11,4,13,14,1,7,4,1,5, %U A065518 11,2,13,7,5,1,8,1,10,11,4,13,2,5,16,1,1,5,11,1,13 %N A065518 Denominator of n/(sum of the digits of n). %H A065518 Harry J. Smith, <a href="/A065518/b065518.txt">Table of n, a(n) for n = 1..1000</a> %e A065518 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, 11/2, 4, 13/4, 14/5, 5/2, 16/7, 17/8, 2, 19/10, 10, 7, 11/2, ... %o A065518 (PARI) a(n) = denominator(n/sumdigits(n)); \\ _Michel Marcus_, Jun 18 2018 %Y A065518 Cf. A065517, A007954. %K A065518 nonn,base %O A065518 1,11 %A A065518 _N. J. A. Sloane_, Nov 27 2001 %E A065518 Definition corrected by _Harry J. Smith_, Oct 20 2009