How can I create an array of symbolic matrices?

I need to create an array of symbolic matrices. But when I try this code:

syms a b c
x(6) = [a b; c 0]

Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

Answer 1

[KSSV]

Use it as a cell...

syms a b c
x{6} = [a b; c 0]