Talk:Legendre prime counting function

Several questions: In principle this function has infinite recursion, so it should have a cut-off for n smaller than some number. 2? Then it is not clear how primes are counted I presume 2 is the first prime, 3 the second prime etc. Perhaps this could be made clear in the intro. The case of '1' is also a bit strange (i see 0 and 1 in the results, probably because some ambiguity in how the question is now posed/explained).