BALTIC-WAY 1994 Problem 10
- Answer
How many positive integers satisfy the following three conditions:
(i) All digits of the number are from the set ;
(ii) The absolute value of the difference between any two consecutive digits is 1 ;
(iii) The integer has 1994 digits?
Dataset text NuminaMath olympiads. Quoted with source.
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8 \cdot 3^{996}
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