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A290386
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Increasing sequence a(n)>a(n-1) where a(n)=smallest integer not yet in the sequence with no digits shared with the previous term a(n-1), no repeated digits, and no 0-digit allowed.
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2
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1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 34, 51, 62, 71, 82, 91, 234, 516, 723, 814, 923, 1456, 2378, 4156, 7238, 9145, 23678
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OFFSET
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1,2
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COMMENTS
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The fact that the sequence is increasing makes it finite.
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LINKS
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EXAMPLE
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12 follows 9 since 10 has the digit 0 and 11 has a repeated digit.
34 follows 12 since any number in between either shares a digit with 12, has a 0 (30), or a repeated digit (33).
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CROSSREFS
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KEYWORD
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nonn,base,fini,full
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AUTHOR
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STATUS
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approved
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