Kata

This kata has very little chance of surviving beta. There aren't any random tests, so I'm raising that issue. Consider, also, that this sequence is entirely predictable. If you look hard enough through published kata, you'll also see that this sequence has been done before, so there's definitely a lacking novelty aspect as well. The generator spin on this is somewhat novel, but not really, since it's been done before on other sequences, like fibonacci for example.