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 A085736 #8 Feb 16 2025 08:32:50 %S A085736 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26, %T A085736 27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49, %U A085736 50,51,52,53,54,55,56,57,58,59,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84 %N A085736 Numbers n such that all groups of order n are solvable. %H A085736 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SolvableGroup.html">Solvable groups</a> %e A085736 The symmetric and alternating groups on 5 elements are not solvable and have orders 60 and 120 respectively. %Y A085736 See A056866, the complementary set of numbers, which is the main entry for this question. %K A085736 nonn %O A085736 1,2 %A A085736 _Andrew Niedermaier_, Jul 20 2003