Simple deterministic method to generate an array of random numbers?

I am looking for a simple method to populate a large int[] testArray with data. Method should accept a single parameter to generate a deterministic sequence of integers, but look like noise at a first glance.

Something like this comes to mind, but data might have patterns.

public int[] populate(int arraySize, int somePrime){
int[] testArray = new int[arraySize];
int offset = -100000; 
long fib = 0; long fibm1 = 1; long fibm2 = 1; 
//...
for(int i = offset; i< testArray.length; i++){
    fib= fibm1+ fibm2;
    fibm2= fibm1;
    fibm1= fib;
    if(i >= 0){  testArray[i] = (int) fib%somePrime; }
    }

return testArray[i];
}

What would be a better method?