code: function toBLC64(term){
      var blc = toBLC(term);
      var digits = "";
      for (var d=0, l=blc.length; d<=l/6; ++d){
        var i = l - d*6 - 6;
        var bits = i < 0 
          ? ("000001"+blc.slice(0, i+6)).slice(-6)
          : blc.slice(i, i+6);
        digits = base64Table[bits] + digits;
      };
      return digits;
    }
docs: Term -> String Converts a term to a base64 binary lambda calculus string.