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

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.

Sequence in context: A346014 A006881 A030229 * A201650 A201514 A201464

Adjacent sequences: A334339 A334340 A334341 * A334343 A334344 A334345

Keyword

nonn,fini,full

Author

Michel Marcus, Sep 08 2020

Status

approved