int enabled = 1;

void button_change() {
  enabled = !enabled;
}

void setup() {
  pinMode(0, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(2, INPUT);
  digitalWrite(0, LOW);
  digitalWrite(1, LOW);
  attachInterrupt(0, button_change, RISING);
  SREG |= 1 << 7;
}

int states[][3] = {
  {1000, LOW, LOW},
  {375, HIGH, LOW},
  {250, HIGH, HIGH},
  {375, HIGH, LOW}
};

void loop() {
  if(enabled) {
    for(int i = 0; i < 4; ++i) {
      digitalWrite(0, states[i][1]);
      digitalWrite(1, states[i][2]);
      delay(states[i][0]);
    }
  }
}