Respuesta :
2 , 2+3=5 , 5+3=8 , 8+3=11 , ... 2+(n-1)·d= 2+ (n-1)·3= 2+3n-3 = -1+3n
4= 2^2 , 9=3^2 , 16= 4^2 , .... (n+1)^2
(-1+3n)/(n+1)^2
2 , 2+3=5 , 5+3=8 , 8+3=11 , ... 2+(n-1)·d= 2+ (n-1)·3= 2+3n-3 = -1+3n
4= 2^2 , 9=3^2 , 16= 4^2 , .... (n+1)^2
(-1+3n)/(n+1)^2