A tridimensional pseudo-random walk defined by means of 'pi': 141592... -2.001 digits, -base 10- into 200303... -3.321 digits, -base 4- [Une pseudo-marche aléatoire tridimensionnelle définie à l'aide de 'pi': 141592... -2.001 chiffres, -base 10- en 200303... -3.321 chiffres, -base 4-].
digit=0 ==> move(+1,0,0) digit=1 ==> move(-1,0,0) digit=2 ==> move(0,+1,0) digit=3 ==> move(0,-1,0)