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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..15.

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

Adjacent sequences:  A098131 A098132 A098133 * A098135 A098136 A098137

KEYWORD

nonn

AUTHOR

Franz Vrabec, Sep 27 2004

STATUS

approved

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Last modified July 21 00:39 EDT 2019. Contains 325189 sequences. (Running on oeis4.)