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Search: id:A126969
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| A126969 |
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First digit of a(n) is the a(n)-th digit of S [a(n+1) is the smallest available integer not yet present in S, subject to S being monotonically increasing]. |
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+0
2
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| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 21, 111, 311, 2111, 11111, 11112, 11113, 11114, 31111
(list; graph; listen)
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