How to store contract address as variable?

I need someway to store mapping of uint256 => contract address. Can I just use the address type?

I need a functions that calls transfer method of the contract address stored.

mapping(uint256=>address)public contractAddress;

function transfer(address _contractAddress, uint256 _amount, address _from, address _to) { // Somehow call transfer of contract at address contractAddress }

transfer(contractAddress[1], 1000000, 0xa53…., 0x37…);