Question 608591
  <pre><font face = "Tohoma Ital" size = 3 color = "indigo"><b> 
Hi
Series: {{{a[n] = 1/n^2}}}
1 + 1/4 + 1/9 + 1/16 + 1/25 = {{{sum( 1/n^2, n=1, 5 )}}}