DB<2> printf"%20d%d\n",(4**$_)x2for 1..17
                   44
                  1616
                  6464
                 256256
                10241024
                40964096
               1638416384
               6553665536
              262144262144
             10485761048576
             41943044194304
            1677721616777216
            6710886467108864
           268435456268435456
          10737418241073741824
                  -1-1
                  -1-1


  DB<3> printf'%20d%1$d'.$/,4**$_ for 1..17
                   44
                  1616
                  6464
                 256256
                10241024
                40964096
               1638416384
               6553665536
              262144262144
             10485761048576
             41943044194304
            1677721616777216
            6710886467108864
           268435456268435456
          10737418241073741824
                  -1-1
                  -1-1


  DB<4> ($x=4**$_)=~y/1-9/"/,printf"%22s%s\n",($x)x2for 1..20,0,0
                     ""
                    """"
                    """"
                   """"""
                  "0"""0""
                  "0"""0""
                 """"""""""
                 """"""""""
                """"""""""""
               "0""""""0"""""
               """""0""""""0"
              """"""""""""""""
              """0"""""""0""""
             """"""""""""""""""
            "0"""""""""0""""""""
            """"""""""""""""""""
           """"""""""""""""""""""
           """"""""""""""""""""""
          """""""0"""""""""""0""""
         "0""""""""""""0"""""""""""
                     ""
                     ""