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A303164
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Lexicographically earliest sequence of distinct terms such that the successive quantities of digits between two successive 6s are given by the succession of the sequence's digits itself.
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9
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0, 1, 2, 3, 4, 5, 6, 60, 61, 7, 62, 8, 9, 63, 10, 16, 11, 12, 26, 13, 14, 15, 64, 17, 18, 36, 65, 19, 20, 46, 56, 21, 22, 23, 76, 24, 25, 27, 67, 86, 28, 29, 30, 31, 68, 32, 33, 34, 35, 69, 37, 38, 96, 39, 160, 66, 161, 40, 41, 162, 606, 163, 164, 165, 42, 43, 167, 600, 168, 601, 44, 616, 45, 47, 169
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OFFSET
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1,3
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COMMENTS
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The sequence starts with a(1) = 0 and is always extended with the smallest integer not yet present that doesn't lead to a contradiction. This sequence is a permutation of the numbers >= 0.
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LINKS
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EXAMPLE
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There are:
0 digit between the 6 of "6" and the 6 of "60";
1 digit between the 6 of "60" and the 6 of "61";
2 digits between the 6 of "61" and the 6 of "62";
3 digits between the 6 of "62" and the 6 of "63";
4 digits between the 6 of "63" and the 6 of "16";
5 digits between the 6 of "16" and the 6 of "26";
6 digits between the 6 of "26" and the 6 of "64";
6 digits between the 6 of "64" and the 6 of "36";
0 digit between the 6 of "36" and the 6 of "65";
6 digits between the 6 of "65" and the 6 of "46";
1 digit between the 6 of "46" and the 6 of "56";
etc.
We see that the first column here is the succession of the digits of the sequence, as well as the size of each chunk of digits between two successive 6s.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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