'n' is quite small. For example, for n = 8, 9, 10 we have L = 47, 76, 123; and φ n = 46.971, 75.999 and 123.046.
See McMinn (2003), and Scott (undated). Also, in a sequence of 'n' equal resistors, connected alternately in series and in parallel, then Limitn→∞ [Total resistance] = φ . If