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 A121289 #9 Oct 11 2019 14:11:28
%S A121289 0,1,2,1,4,5,1,7,8,3,1,11,2,13,14,1,16,17,3,19,2,1,22,23,4,25,26,9,1,
%T A121289 29,2,31,32,11,34,35,1,37,38,13,4,41,2,43,44,1,46,47,8,49,5,17,52,53,
%U A121289 9,1,2,19,58,59,4,61,62,3,64,65,1,67,68,23,7,71,2,73,74,5,76,77,1,79,8,27,82
%N A121289 a(n) = n/(largest triangular number dividing n).
%F A121289 a(n) = n/(A115017(n))
%t A121289 f[n_] := Max[Select[Divisors[n], IntegerQ[(8# + 1)^(1/2)] & ]]; Table[n/f[n], {n, 0, 82}] (* _Ray Chandler_, Aug 29 2006 *)
%Y A121289 Cf. A000217, A083312, A115017.
%K A121289 nonn
%O A121289 0,3
%A A121289 _Leroy Quet_, Aug 24 2006
%E A121289 Extended by _Ray Chandler_, Aug 29 2006