A349090 - OEIS

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.

10, 18, 20, 21, 28, 35, 36, 44, 45, 50, 52, 53, 54, 55, 66, 69, 70, 71, 72, 74, 75, 76, 77, 78, 84, 88, 89, 90, 91, 98, 102, 103, 104, 105, 112, 116, 118, 119, 120, 124, 125, 127, 128, 130, 131, 132, 133, 134, 135, 136, 149, 150, 152, 153, 156, 159, 160, 161

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

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

LINKS

Jud McCranie, Table of n, a(n) for n = 1..691

EXAMPLE

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

CROSSREFS

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

Sequence in context: A043688 A004752 A087141 * A178461 A043724 A043571

Adjacent sequences: A349087 A349088 A349089 * A349091 A349092 A349093

KEYWORD

nonn

AUTHOR

Jud McCranie, Dec 12 2021

STATUS

approved