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 A335950 #11 Jan 08 2025 11:22:31 %S A335950 135,136,149,150,151,164,165,166,179,180,181,195,196,209,210,211 %N A335950 Sparse rulers with length a(n) cannot be perfect rulers. %C A335950 a(n) is in this list if and only if A103300(a(n)) = 0. These values were found by Arch D. Robison, see the links section. %C A335950 For definitions related to sparse rulers see A103294. %H A335950 Peter Luschny, <a href="http://oeis.org/wiki/User:Peter_Luschny/PerfectRulers">Perfect and optimal rulers</a>. %H A335950 Peter Luschny, <a href="http://luschny.de/math/rulers/rulercnt.html">Perfect and optimal rulers counts</a>. %H A335950 Arch D. Robison, <a href="http://software.intel.com/articles/parallel-computation-of-sparse-rulers">Parallel Computation of Sparse Rulers</a>, Jan 14 2014. %H A335950 <a href="/index/Per#perul">Index entries for sequences related to perfect rulers.</a> %Y A335950 Cf. A103300, A103294. %K A335950 nonn,more %O A335950 1,1 %A A335950 _Peter Luschny_, Jul 14 2020