OFFSET
1,2
COMMENTS
Similar to A140606, but for example, (a-b)/(c-d) and (b-a)/(c-d) are also regarded as the same.
LINKS
Muniru A Asiru, Table of n, a(n) for n = 1..100
Azuma Seiichi, Expressions with n variables
FORMULA
a(n) = A182173(n)/2. - Zhujun Zhang, Aug 11 2018
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Azuma Seiichi, Sep 28 2014
EXTENSIONS
a(7)-a(17) from Muniru A Asiru, Aug 13 2018
STATUS
approved