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1, 1, 1, 1, 0, 2, 1, 1, 0, 1, 1, 0, 0, 0, 2, 1, 1, 2, 0, 0, 2, 1, 0, 0, 0, 0, 0, 2, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 2, 0, 0, 0, 0, 0, 3, 1, 1, 0, 0, 2, 0, 0, 0, 0, 2
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,6
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COMMENTS
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Right border = A001227, the number of odd divisors of n.
Row sums = A133700: (1, 2, 3, 3, 3, 6, 3, 4, 6, 6, ...)
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LINKS
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FORMULA
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Inverse Mobius transform of A133698, as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle:
1;
1, 1;
1, 0, 2;
1, 1, 0, 1;
1, 0, 0, 0, 2;
1, 1, 2, 0, 0, 2;
1, 0, 0, 0, 0, 0, 2;
1, 1, 0, 1, 0, 0, 0, 1;
...
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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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