OFFSET
1,1
COMMENTS
LINKS
Manfred Scheucher, Table of n, a(n) for n = 1..62
EXAMPLE
For n=89, 4/89 = 1/23 + 1/690 + 1/61410 = 1/24 + 1/306 + 1/108936 are the representations with the largest resp. smallest unit fraction.
PROG
(PARI) is(n, s=0)=for(c=n\4+1, n*3\4, for(b=c+1, ceil(2/(t=4/n-1/c))-1, numerator(t-1/b)==1||next; !s&&(s=t-1/b)&&next(2); t-1/b<s&&return(1)))
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
M. F. Hasler, May 16 2015
EXTENSIONS
More terms from Manfred Scheucher, May 24 2015
STATUS
approved