The first five terms of the sequence are 1,4,7,9,11.
A sequence is an enumerated group of items in mathematics where repetitions are permitted and order is important. It has members, just like a set does. The length of the sequence is determined by the number of items.
Given,
aₙ=a n₋₁ +2 n
For a1 = 1
a2 = 1 + 2.2 = 1 + 4 = 5
a3 = 1 + 2.3 = 1 + 6 = 7
a4 = 1 + 2.4 = 1 + 8 = 9
a5 = 1 + 2.5 = 1 + 10 = 11
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