Series from For loop (is there a repository for Integer Sequences?)

Processing Beginners
19

Got it! Thank you for your patience…
I tried to extend the code for 3, 5, 7, 9, 3, 5, 7, 9, but on the second repeat I get 4, 6, 8…

int[] testsequence;

// first parameter is number of repetitions
// second parameter is lo
// third parameter is hi
// fourth parameter is interval

void setup() {
  testsequence = series_function(2, 3, 9, 2);

  //println(testsequence);


  exit();
}


int[] series_function(int n, int lo, int hi, int skip) {

  int qty = abs(hi - lo) + 1;
  int len = abs(n) * qty;
  int dir;
  if (hi >= lo) {
    dir = 1;
  } else {
    dir = -1;
  }
  int seq[] = new int[len];

  for (int i = 0; i < len; i += skip) {
    seq[i] = i % qty * dir + lo;
    println(seq[i]);  // here during testing
  }

  return seq;
}