press the space button to start calculating, and x to pause it.
the fibbonacci sequence is where you start with 1 and add the last number and the number before that to find the next number. so it starts with 1, 0+1=1, 1+1=2, 1+2=3, 2+3=5, 3+5=8, and so on. hence, the sequence is 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, and it gets really big really fast after that. you can look it up on google and find all sorts of stuff about it. if you graph it, it looks a lot like a shell.
