expand4.rb

def f1(n)
	n = (n * 3 + 1) / 2 while (n.odd?)
	n /= 2 while (n.even?)
	return n
end

def adv(n)
	c = 0
	n1 = n
	while (n != 1)
		n = f1(n)
		break if (n < n1)
		c += 1
	end
	return c
end

def width(n)
	
	t = 2**n
	(t...2**(n+1)).each_with_index \
	{
		|i, j|
		s = i.to_s(2).reverse
		puts([j.to_f / (t - 1), adv(s.to_i(2)) + n * 20, n].join("\t"))
	}
	puts

end



14.times { |x| width(x) }