If you are talking about truly random numbers, then there is no pattern created over time. In other words, no matter how many random numbers you generate, there is no way to determine what the next random number is. This is actually the definition of what a random number is.
Software-generated random numbers only are pseudorandom. They are not truly random because the computer uses an algorithm based on a distribution, and are not secure because they rely on deterministic, predictable algorithms.
