Question 1

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S e a space left curly bracket space a subscript n space right curly bracket space l a space s u c e s i ó n space d e f i n i d a space p o r

a subscript n equals open curly brackets table attributes columnalign left end attributes row cell left parenthesis negative 1 right parenthesis to the power of n space comma 1 less or equal than n less or equal than 14 space end cell row cell left parenthesis n plus 1 right parenthesis squared space comma space n greater than 14 end cell end table close

C a l c u l e space stack sum a subscript n with n equals 1 below and 31 on top

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