OFFSET
1,2
COMMENTS
Let s(n) be the number of ways to select 3 different points from a square of grid points with side length n such that they form a triangle with absolute area n, then a(n) = s(n)/4. Permutations of the vertices are considered equivalent.
CROSSREFS
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Oct 15 2018
EXTENSIONS
a(35)-a(40) from Giovanni Resta, Oct 26 2018
STATUS
approved