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 A190572 #6 Jun 02 2025 04:04:59 %S A190572 6,8,9,10,10,11,11,12,12,13,14,14,15,15,16,16,16,17,18,19,20,20,21,22, %T A190572 22,22,22,23,23,24,24,24,25,25,26,26,26,26,27,27,27,28,28,28,29,29,29, %U A190572 29,30,30,30,31,31,31,31,32,32,33,33,34,34,34,34,35,35,35 %N A190572 A189685/2. %F A190572 a(n) = A189683(2n)/2 %K A190572 nonn %O A190572 1,1 %A A190572 _Jonathan Sondow_, May 12 2011