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 A050992 #35 Feb 16 2025 08:32:41 %S A050992 6,8,12,16,20,24,28,40,44,48,52,60,68,76,80,92,112,116,120,124,148, %T A050992 154,164,172,188,208,212,236,240,244,264,268,280,284,292,316,332,340, %U A050992 356,364,388,404,412,428,436,452,508,520,524,548,556,596,604,628,652 %N A050992 4-Knödel numbers. %H A050992 Amiram Eldar, <a href="/A050992/b050992.txt">Table of n, a(n) for n = 1..10000</a> %H A050992 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KnoedelNumbers.html">Knödel Numbers.</a> %t A050992 Select[Range[6, 1000, 2], Divisible[# - 4, CarmichaelLambda[#]]&] (* _Jean-François Alcover_, Mar 01 2018 *) %Y A050992 Cf. A002997, A050990, A033553, A050993, A208154-A208158. %K A050992 nonn %O A050992 1,1 %A A050992 _Eric W. Weisstein_