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 A378501 #14 Feb 12 2025 01:50:01 %S A378501 3,5,6,7,10,11,13,14,15,17,19,21,22,23,24,26,27,28,29,30,31,33,34,35, %T A378501 37,38,39,40,41,42,43,44,45,46,47,49,51,52,53,54,55,56,57,58,59,60,61, %U A378501 62,65,66,67,68,69,70,71,73,74,75,76,77,78,79,82,83,85,86,87 %N A378501 Integers m such that A379816(m) = A379815(m) + m. %o A378501 (PARI) isok(m) = for(k=m+1, 2*m, if(issquare(1/m-1/k), return(0))); m>4||m==3; \\ _Jinyuan Wang_, Feb 11 2025 %Y A378501 Cf. A379815, A379816. %Y A378501 Complement of A380743. %K A378501 nonn %O A378501 1,1 %A A378501 _Michel Marcus_, Feb 10 2025 %E A378501 More terms from _Jinyuan Wang_, Feb 11 2025