login
A098134
Number of triangles with corners on the integer lattice Z X Z (up to translations, rotations and reflections), the square of the longest side equal to A001481.
0
0, 0, 1, 1, 4, 2, 2, 7, 8, 5, 10, 7, 13, 20, 17, 19
OFFSET
0,5
EXAMPLE
a(3) = 1 because there is only 1 triangle on the integer lattice Z*Z where the square of the longest side is equal to A001481(3) = 4; its a triangle with sides 2, sqrt(2), sqrt(2).
CROSSREFS
Sequence in context: A087507 A020777 A153810 * A079191 A079184 A095800
KEYWORD
nonn
AUTHOR
Franz Vrabec, Sep 27 2004
STATUS
approved