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1, 2, 2, 2, 1, 3, 3, 3, 1, 4, 2, 1, 1, 1, 5, 4, 4, 4, 1, 1, 6, 2, 1, 1, 1, 1, 1, 7, 4, 4, 2, 5, 1, 1, 1, 8, 3, 2, 4, 1, 1, 1, 1, 1, 9, 4, 4, 2, 2, 6, 1, 1, 1, 1, 10
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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Row sums = A129235: (1, 4, 6, 11, 10, 20, ...).
Left border = A000005, d(n): (1, 2, 2, 3, 2, 4, ...).
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LINKS
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FORMULA
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Inverse Moebius transform of A051340.
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EXAMPLE
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First few rows of the triangle:
1;
2, 2;
2, 1, 3;
3, 3, 1, 4;
2, 1, 1, 1, 5;
4, 4, 4, 1, 1, 6;
2, 1, 1, 1, 1, 1, 7;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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