Do you still have the computer you've used back in 2013? If you do, search for wallet.aes.json file. It is an encrypted file that has your private and public keys, and you can restore your wallet with these keys. The file itself is encrypted with the password that you've created in blockchain.info, and the file can be decrypted with scripts that you can find online, like this one - https://gist.github.com/fcicq/3368495