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 A077030 #14 Mar 19 2024 03:17:24 %S A077030 122,127,128,142,5233 %N A077030 Numbers k such that A068340(k)=+/-2. %C A077030 Any subsequent terms are > 10^12. - _Lucas A. Brown_, Mar 18 2024 %H A077030 Lucas A. Brown, <a href="https://github.com/lucasaugustus/oeis/blob/main/A076542.py">Python program</a>. %o A077030 (PARI) isok(k) = abs(sum(i=1, k, i*moebius(i))) == 2; \\ _Michel Marcus_, Jan 14 2023 %Y A077030 Cf. A068340, A076542, A077031, A077032, A077033. %K A077030 nonn,more,hard %O A077030 1,1 %A A077030 _Zak Seidov_, Oct 21 2002