JavaScript, size 82, by Ismael Miguel
var v='',i=0;for(;i<(21<<2)-~1;)v+=i^++i;console.log(v+i)//,.13<<=[[[[]]]]iiijnozz
Previous version:
var v='',i=0;for(;i<(21<<2)-~1;)v+=i^++i;console.log(v+i);//,.13<<=[[[[]]]]iiijnzz
var v='',i=0;for(;i<(21<<2)-~1;)v+=i^++i;console.log(v+i)//,.13<<=[[[[]]]]iiijnozz
Previous version:
var v='',i=0;for(;i<(21<<2)-~1;)v+=i^++i;console.log(v+i);//,.13<<=[[[[]]]]iiijnzz