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 A050981 #11 Feb 16 2025 08:32:41 %S A050981 1,1,2,3,1,2,5,3,3,2,8,9,2,5,11,10,3,3,14,15,4,8,6,9,9,2,4,21,5,11,23, %T A050981 21,10,3,26,10,3,14,29,5,15,8,6,11,8,6,35,6,9,9,15,39,2,4,41,8,21,5, %U A050981 44,3,11,23,18,24,21,10,50,17,3,26,53,27,10,6,56,22,14,29,24,5,5,15 %N A050981 Haupt-exponents of 9 modulo integers relatively prime to 9. %H A050981 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MultiplicativeOrder.html">Multiplicative Order</a> %Y A050981 Cf. A002326, A002329, A053452. %K A050981 nonn %O A050981 1,3 %A A050981 _Eric W. Weisstein_