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 A349090 #25 Dec 23 2021 06:16:48 %S A349090 10,18,20,21,28,35,36,44,45,50,52,53,54,55,66,69,70,71,72,74,75,76,77, %T A349090 78,84,88,89,90,91,98,102,103,104,105,112,116,118,119,120,124,125,127, %U A349090 128,130,131,132,133,134,135,136,149,150,152,153,156,159,160,161 %N A349090 Where zeros occur in A349082. These correspond to rationals, 0 < p/q < 1, that have no solution p/q = 1/x + 1/y, 0 < x < y. %C A349090 For index k, p/q = A002260(k)/A003057(k). %H A349090 Jud McCranie, <a href="/A349090/b349090.txt">Table of n, a(n) for n = 1..691</a> %e A349090 10 is a term because A349082(10)=0, indicating that 4/5 = 1/x + 1/y has no solution. %Y A349090 Cf. A349082, A002260, A003057, A349091, A349092. %K A349090 nonn %O A349090 1,1 %A A349090 _Jud McCranie_, Dec 12 2021