A349090 - OEIS

%I #25 Dec 23 2021 06:16:48

%S 10,18,20,21,28,35,36,44,45,50,52,53,54,55,66,69,70,71,72,74,75,76,77,

%T 78,84,88,89,90,91,98,102,103,104,105,112,116,118,119,120,124,125,127,

%U 128,130,131,132,133,134,135,136,149,150,152,153,156,159,160,161

%N 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 For index k, p/q = A002260(k)/A003057(k).

%H Jud McCranie, <a href="/A349090/b349090.txt">Table of n, a(n) for n = 1..691</a>

%e 10 is a term because A349082(10)=0, indicating that 4/5 = 1/x + 1/y has no solution.

%Y Cf. A349082, A002260, A003057, A349091, A349092.

%K nonn

%O 1,1

%A _Jud McCranie_, Dec 12 2021