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 A050980 #9 Feb 16 2025 08:32:41 %S A050980 2,4,1,2,10,4,4,8,6,2,11,20,6,28,5,10,4,12,4,20,14,4,23,7,8,52,20,6, %T A050980 58,20,2,4,22,22,35,3,20,10,13,18,82,8,28,11,4,10,12,16,10,100,17,4, %U A050980 106,12,12,28,44,4,8,110,20,100,7,14,130,6,12,68,46,46,20,28,14,148,5 %N A050980 Haupt-exponents of 8 modulo integers relatively prime to 8. %H A050980 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MultiplicativeOrder.html">Multiplicative Order</a> %Y A050980 Cf. A002326, A002329. Presumably this is a duplicate of A053451. %K A050980 nonn %O A050980 1,1 %A A050980 _Eric W. Weisstein_