{"id":"quiet-index-r5-q39","record":"Q39","title":"Unlabelled digits","revision":"quiet-index-r5","document_type":"Table","subject":"number-sequences","source_edition":null,"text":"One, four, nine. A square in the corner is neither an instruction nor a signature. There are many ways to continue three numbers without a rule.","canonical_url":"/archive/quiet-index/r5/q39","links":[{"record":"Q37","title":"Universal recurrence card","href":"/archive/quiet-index/r5/q37","artifact_id":"quiet-index-r5-q37"},{"record":"Q40","title":"The recurrence that stops","href":"/archive/quiet-index/r5/q40","artifact_id":"quiet-index-r5-q40"},{"record":"Q27","title":"Unresolved shelf mark","href":"/archive/quiet-index/r5/q27","artifact_id":"quiet-index-r5-q27"}],"data":{"sequence":[1,4,9],"rule":null}}