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A333568
Lexicographically earliest sequence of nonnegative integers such that two distinct terms differ by at least 3 decimal digits.
8
0, 111, 222, 333, 444, 555, 666, 777, 888, 999, 1012, 1103, 1230, 1321, 1456, 1547, 1674, 1765, 2023, 2132, 2201, 2310, 2467, 2576, 2645, 2754, 3031, 3120, 3213, 3302, 3475, 3564, 3657, 3746, 4048, 4159, 4284, 4395, 4806, 4917, 5069, 5178, 5296, 5387, 5814
OFFSET
0,2
COMMENTS
This is the distance 3 lexicode over the decimal alphabet. - N. J. A. Sloane, Jul 20 2021
LINKS
J. H. Conway, Integral lexicographic codes, Discrete Mathematics 83.2-3 (1990): 219-235. See paragraph 3.
J. H. Conway and N. J. A. Sloane, Lexicographic codes: error-correcting codes from game theory, IEEE Transactions on Information Theory, 32:337-348, 1986.
Rémy Sigrist, C program for A333568
PROG
(C) See Links section.
CROSSREFS
Cf. A075926 (binary equivalent)
Sequence in context: A084043 A291266 A033284 * A123673 A177769 A074842
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Jun 09 2020
STATUS
approved