Question 934996
{{{S[500]=(1-2^(501))/(1-2)=2^501-1}}}
{{{S[5]=(1-2^(6))/(1-2)=2^6-1}}}
So then,
{{{S=S[500]-S[5]}}}
{{{S=2^501-1-(2^6-1)}}}
{{{S=2^501-2^6}}}