Find a way to write the digits 1 through 9 in sequence, so that the numbers determined by any two consecutive digits are divisible either by 7 or by 13.
Write a number as a word. Now write how many letters it has, write how many letters this has and so on. Example: sixteen, seven, five, four, four, ... .
Question: What is the so unique with this?
Can you write a sentence that satisfies following three properties 1. Its a palindrome 2. The statement is true. 3. It Can be used as a template to generate an infinite number of sentences which are both palindromes and true.