3 4 6 9 13 sequence?

Answer 1

recursive rule:

term(n+1) = term(n) + (n) also, n starts at 0 and term(1)=3

term(1) = 3 ; (n=0)

term(2) = term(1) + (1) = 4

term(3) = term(2) + (2) = 6

term(4) = term(3) + (3) = 9

term(5) = term(4) + (4) = 13

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