∞^2 (Infinity Squared), ∞^3 (Infinity Cubed) and ∞^4 (Infinity Hypercubed)

Are 3 years that last
 * ∞^2 (Infinity Squared)
 * ∞^3 (Infinity Cubed)
 * ∞^4 (Infinity Hypercubed)

the 3 of those before the infinity symbol there is a number, when it reaches infinity it gets a higher number

^2 -> ^3 -> ^4

THERE ARE ONLY THOSE 3