The number of points with integral co-ordinates that are interior to the circle $x^2+y^2=16$, is _____

The no of points with integral co-ordinates that are interior to the circle $x^2+y^2=16$ is 

$s=x^2+y^2-16=0$ $x=1$

$s_{11}<0$ $x^2+y^2-16=0$

$\left(1,1\right)\left(1,2\right)\left(1,3\right)$

$\left(2,1\right)\left(2,2\right)\left(2,3\right)$

$\left(3,1\right)\left(3,2\right)$

$8\times 4=32$

On x-axis, y-axis

$\left(1,0\right)\left(2,0\right)\left(3,0\right)$

$3\times 4=12$ and $\left(0,0\right)$

Total = 45