My random cipher generator picked this short text to encipher as a Sequence Tramp. I’ll provide the primer. With the primer, it’s not difficult to get the plaintext but I was unable to identify the 1-word key. I eventually figured out why. Here’s the ciphertext. I’ll provide a Caesar crib.
01349 HHTTN HEUEP BNTSG SOOEA FONOW RLTCI BCTOE U 1