OFFSET
1,2
LINKS
Peter Kagey, Table of n, a(n) for n = 1..1578 (All rows with first term less than or equal to 30.)
Wikipedia, Erdős-Graham problem.
EXAMPLE
First six rows:
[1] because 1/1 = 1.
[6, 3, 2] because 1/6 + 1/3 + 1/2 = 1.
[12, 6, 4, 2] because 1/12 + 1/6 + 1/4 + 1/2 = 1.
[15, 10, 3, 2] because 1/15 + 1/10 + 1/3 + 1/2 = 1.
[15, 12, 10, 4, 2] because 1/15 + 1/12 + 1/10 + 1/4 + 1/2 = 1.
[15, 12, 10, 6, 4, 3] because 1/15 + 1/12 + 1/10 + 1/6 + 1/4 + 1/3 = 1.
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Peter Kagey, Apr 19 2016
STATUS
approved