# Write a formula for an, the n th term for the given sequence: 3, 5, 7, 9, …

Write a formula for an, the n th term for the given sequence: 3, 5, 7, 9, …
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ignaciopastorp6
3,5,7,9,... is the sequence of odd positive integers except the integer 1.
${a}_{n}=\left(2n-1\right)\forall n\in ℕ$ is the set of all odd natural numbers.
Hence, ${a}_{n}=\left(2n+1\right):n\ge 1$ will generate this sequence and is therefore the general ${n}^{th}$ term