MathDB

10

Part of 1994 Baltic Way

Problems(1)

Integer has 1994 digits from 1 to 5, next digit is 1 away

Source: Baltic Way 1994

12/22/2011
How many positive integers satisfy the following three conditions:
a) All digits of the number are from the set {1,2,3,4,5}\{1,2,3,4,5\}; b) The absolute value of the difference between any two consecutive digits is 11; c) The integer has 19941994 digits?
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