Er, perhaps I don't understand the move you describe, but in any case,
by my calculations it would take 1260 repetitions to come back home
doing that one (1260=2^2*3^2*5*11). It is certainly the case that
1260 > 216 so that number must be wrong (I could be miscalculating,
but I don't see how). 1260 is rather similar in appearance to 216,
perhaps you spazzed somehow?