Question 634654
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
{{{a[5] = a[1] + 4d = 0}}} &#8658;   {{{a[1] = -4d}}}
{{{a[25] = -4d + 24d = 20d = 8}}} &#8658;  d = 8/20 = 2/5
{{{a[2] = -8/5 + 1*(2/5) = -6/5}}}
{ -8/5,  -6/5, -4/5, -2/5, 0, ... }