%N Numbers with a square number of 1's in their binary expansion.
%C Begins to differ from A084345 at the 22nd term.
%C There are A003099(n) terms with at most n bits, so a(n) is n sqrt log n times a bounded function of n (which does not tend toward a limit). - _Charles R Greathouse IV_, Mar 26 2013
%H Amiram Eldar, <a href="/A084561/b084561.txt">Table of n, a(n) for n = 1..10000</a>
%t Select[Range[0,178],IntegerQ[Sqrt[Count[IntegerDigits[#,2],1]]]&] (* _Jayanta Basu_, May 24 2013 *)
%o (PARI) is(n)=issquare(hammingweight(n)) \\ _Charles R Greathouse IV_, Mar 26 2013
%Y Cf. A001969, A000069, A052294, A084345.
%A _Jason Earls_, Jun 27 2003