A334342 - OEIS

A334342

Tatsuru Watanabe's set of 47 squarefree numbers whose reciprocals add to 1, with the property that each number has exactly two distinct prime factors.

6, 10, 14, 15, 21, 22, 26, 33, 34, 35, 38, 39, 46, 51, 55, 57, 58, 62, 65, 69, 74, 82, 85, 86, 87, 91, 93, 95, 106, 111, 123, 133, 145, 155, 159, 185, 203, 215, 253, 265, 287, 319, 493, 583, 731, 851, 1073

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

OFFSET

1,1

COMMENTS

This is one of the 17 sets given in the link below.

LINKS

Table of n, a(n) for n=1..47.

Carlos Rivera, Problem 35. More wrong turns..., The Prime Puzzles and Problems Connection.

Tatsuru Watanabe, New examples of the representation of 1 by the sum of reciprocals of semiprime numbers, arXiv:2009.03275 [math.NT], 2020.

Index entries for sequences related to Egyptian fractions

CROSSREFS

Cf. A201650.