Hello. I am interested in a discussion some of the members had in What is the cover time of a random walk on a cube?. I have managed to write a code for mister Roberts formula, but it works only for Marcov Chains with small number of states (I get the correct result for this example). I have a problem already if we have just about 25 states (my code is to slow). How can we write a faster algorithm? Cay you share yours?