Question

What's the equation of this sequence 4,8,16,32,64,128,256

Answer 1

The equation would be like :

2^(n+1)

Explanation:

Hope this helps ;)

Good luck ^^

Answer 2

See below

Explanation:

Here we have a function
`a` such that
`a: \mathbb{N}\to \mathbb{R}` and
`a:n \mapsto a(n) = a_n`

The sequence is denoted as
`$\{a_n\}_{n\in\mathbb{N}}$` such that
`\mathbb{N} = \{1, 2, 3, ...\}`

For this sequence, we would have

`\left\{ {2^n\right\}_(n = 2)^8`

But sure it seems to follow

`\left\{ {2^n\right\}_(n = 2)^\infty`