some perl golfing for xmas-trees! 8 )
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"""""""""""
""
""
UPDATE: Maybe someone knows how to further shorten the last, decorated example! |