How to create an infinite matrix?

I am having trubles of how to approach this " building an infinit matrix " with the final form of the matrix as:

A=[a0 a1 a2 a3 a4 ......]. the number after the letter is just an index.

and thank you

Answer 1

[Walter Roberson]

You cannot. The maximum array size in MATLAB is 2^48 - 1.

[Walter Roberson]

If you are working symbolically then

syms('a', [1,N])

When N is a definite nonnegative integer, creates a vector of symbols a1 a2 and so on. You could syms('a0') separately and add it at the beginning.

[Sultan Aljohani]

It works. Thanks all