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 A050502 #11 Sep 04 2024 22:02:17 %S A050502 0,2,4,6,9,11,14,17,20,24,27,30,34,37,41,45,49,53,56,60,64,69,73,77, %T A050502 81,85,89,94,98,103,107,111,116,120,125,130,134,139,143,148,153,157, %U A050502 162,167,172,177,181,186,191,196,201,206,211,216,221,226,231,236,241 %N A050502 a(n) = ceiling(n*log(n)). %Y A050502 See A050503 for more information. %K A050502 nonn %O A050502 1,2 %A A050502 _N. J. A. Sloane_, Dec 27 1999