When sum of reciprocal squares = 1/2

 
 

9 terms:
1/2 = 1/2^2 + 1/3^2 + 1/4^2 + 1/5^2 + 1/7^2 + 1/8^2 + 1/56^2 + 1/168^2 + 1/840^2
 

10 terms:
1/2 = 1/2^2 + 1/3^2 + 1/4^2 + 1/5^2 + 1/6^2 + 1/12^2 + 1/30^2 + 1/60^2 + 1/75^2 + 1/100^2
 

11 terms:
1/2 = 1/2^2 + 1/3^2 + 1/4^2 + 1/5^2 + 1/6^2 + 1/12^2 + 1/30^2 + 1/50^2 + 1/100^2 + 1/150^2 + 1/300^2

 
 

Can you express   1/2   with less than 9 terms?

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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About benvitalis

math grad - Interest: Number theory
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