da Charmaine Mendoza mancano 6 anni
631
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da Gabriela Casado Patiño
da Rebecca Gabbert
da Patrick Ryan
da Deirdra Deswood
An=A1*rn-1
grows to INFINITY
It is not fixed
Fixed Total Number of Terms
Difference or Factor
Starting Number
Sn=n/2n/2n/2 (A1+An)
An=A1+(n-1)d