Not sure whether this is in the standard or an extentions to it, but it works with all fortran compilers I 
have access to and it fails with gfortran

$ cat > bug.f <<EOF
      program bug
      parameter (maxdim=5)
      dimension a(maxdim,maxdim)
      data ((a(j,k),k=1,j),j=1,maxdim) /
     +  1,  2,  3,  4,  5,  6,  7,  8,  
     +  9, 10, 11, 12, 13, 14, 15 /
      character*20 fmt
*
      write(fmt,'(''('',i2.2,''(1x,f5.2))'')') maxdim
      do j=1,maxdim
         print fmt, (a(j,k),k=1,maxdim)
      enddo
      end
EOF

$ gfortran -o bug bug.f
In file bug.f:4

      data ((a(j,k),k=1,j),j=1,maxdim) /                                
                       1
Error: Variable 'j' at (1) cannot appear in an initialization expression