OFFSET
1,1
COMMENTS
Not the same as A005279, this sequence contains 184.
FORMULA
a(n) = Sum_{j=1..floor(n/3)} Sum_{i=j..floor((n-j)/2)} c(i*j/(i+j)) * c(i*(n-i-j)/(n-j)) * c(j*(n-i-j)/(n-i)), where c(n) = 1 - ceiling(n) + floor(n).
EXAMPLE
184 = [120,40,24] so that (120+40) | 120*40, (40+24) | 40*24, (120+24) | 120*24.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Apr 10 2021
STATUS
approved