The 8 first decimals -base 10- of 'pi' on a Tridimensional Hilbert Curve -iteration 1- [Les 8 premières décimales -base 10- de 'pi' sur une courbe de Hilbert tridimensionnelle -itération 1-].
Starting from the bottom front right corner of the [0,+1]x[0,+1]x[0,+1] cube, the spheres are
labelled with the 4 first decimals of 'pi' when following a
tridimensional Hilbert curve -iteration 1-. The radius of each sphere is an increasing function of the decimals.