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 A043549 #8 Apr 24 2021 21:47:47 %S A043549 1,1,1,3,6,8,10,15,21,28,32,41,45,55,66,78,91,98,113,128,136,153,171, %T A043549 190,210,231,242,265,288,313,325,351,378,406,435,465,496,512,545,578, %U A043549 613,648,666,703,741,780,820,861,903,946,968 %N A043549 Least k for which the integers floor(2*k/m) for m=2,3,...,n are distinct. %K A043549 nonn %O A043549 1,4 %A A043549 _Clark Kimberling_