Question: what is the next number in the sequence 1 11 21 osrs
[{'answer': '1211', 'provenance': [{'wikipedia_id': '563980', 'title': 'Look-and-say sequence', 'start_paragraph_id': 26, 'start_character': 183, 'end_paragraph_id': 26, 'end_character': 187, 'bleu_score': 1.0, 'section': 'Section::::Popularization.\n'}]}]