Keith Numbers
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Mike Keith  
A Keith number is an ndigit integer N with the following property: If a Fibonaccilike sequence (in which each term in the sequence is the sum of the n previous terms) is formed, with the first n terms being the decimal digits of the number N, then N itself occurs as a term in the sequence. For example, 197 is a Keith number since it generates the sequence: 1, 9, 7, 17, 33, 57, 107, 197, ...  


Levels:  High School (912), College 
Languages:  English 
Math Topics:  Sequences and Sets 
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