I also noticed:
$ 13 : '+/"1 (i.y+1) =/ +/"1 z [ z =. #: i. 2^y' 6
7 64 7
13 : '+/"1 (i.y+1) =/ +/"1 z [ z =: #: i. 2^y' 6
1 6 15 20 15 6 1--> J7 -- Met vriendelijke groet, =@@i ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
