If the first digit is 3, the next must be 4, and the rest $n-2$ digits form a valid sequence: $a_n-2$ - AMAZONAWS

📅 March 11, 2026 👤 scraface

Mar 11, 2026

$If the first digit is 3, the next must be 4, and the rest $n-2$ digits form a valid sequence: $a_{n-2}$$