Question: plotting problem

p:=Array(0..10):
  p[0]:=0:
  for i from 0 to 4 do
      p[i+1]:=50*sin(3.14*(i+1)*(4)/0.6):
      phat[i+1]:= p[i+1]+((7)*u[i])+((8)*u__dot[i])+((9)*u__doubledot[i]):
      u[i+1]:= phat[i+1]/(5):
      u__dot[i+1]:=(20*(u[i+1]-u[i]))-u__dot[i]:
      u__doubledot[i+1]:= ((400*(u[i+1]-u[i]))-(40*u__dot[i])-(u__doubledot[i])):
end do;
for i from 5 to 9 do
      p[i+1]:=0.0:
      phat[i+1]:= p[i+1]+((7)*u[i])+((8)*u__dot[i])+((9)*u__doubledot[i]):
      u[i+1]:= phat[i+1]/(5):
      u__dot[i+1]:=(20*(u[i+1]-u[i]))-u__dot[i]:
      u__doubledot[i+1]:= ((400*(u[i+1]-u[i]))-(40*u__dot[i])-(u__doubledot[i])):
  end do;

fd_table:=eval(seq[u(i),phat(i)],i=0..N);

Error, (in plot) invalid input: assigned expects its 1st argument, n, to be of type assignable, but received table( [( 0 ) = 0, ( 1 ) = .1212413309, ( 2 ) = .6455795610, ( 3 ) = 1.697433673, ( 4 ) = 2.998802081, ( 5 ) = 3.956949320, ( 6 ) = 3.922485012, ( 7 ) = 2.630933927, ( 9 ) = -1.712001106, ( 8 ) = .4851987783, ( 10 ) = -3.184465868 ] )