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Omni-MATH / For which maximal N there exists an N-digit number with the following property: among any sequence of its consecutive decimal digits some digit is present once only? Alexey Glebov

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problem

For which maximal NN there exists an NN-digit number with the following property: among any sequence of its consecutive decimal digits some digit is present once only? Alexey Glebov
Plain-text mathematical notation (without MathML)
For which maximal N there exists an N-digit number with the following property: among any sequence of its consecutive decimal digits some digit is present once only?
	
	Alexey Glebov
Original LaTeX notation
For which maximal $N$ there exists an $N$-digit number with the following property: among any sequence of its consecutive decimal digits some digit is present once only?
	
	Alexey Glebov

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