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A134838
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Triangle read by rows, n-th row = first n terms of an array formed by A051731 * A051731(transform).
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0
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1, 1, 2, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 2, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 3, 1, 2, 1, 2, 2, 2, 1, 2, 1, 4
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OFFSET
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1,3
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COMMENTS
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Row sums = sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8, ...).
Right border = d(n), A000005: (1, 2, 2, 3, 2, 4, 2, 4, ...).
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LINKS
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FORMULA
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Given the transform A051731 * A051731(transform), extract the first n terms of each row to form the triangle.
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EXAMPLE
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First few rows of the array:
1, 1, 1, 1, 1, 1, 1, ...
1, 2, 1, 2, 1, 2, 1, ...
1, 1, 2, 1, 1, 2, 1, ...
1, 2, 1, 3, 1, 2, 1, ...
1, 1, 1, 1, 2, 1, 1, ...
1, 2, 2, 2, 1, 4, 1, ...
...
First few rows of the triangle:
1;
1, 2;
1, 1, 2;
1, 2, 1, 3;
1, 1, 1, 1, 2;
1, 2, 2, 2, 1, 4;
1, 1, 1, 1, 1, 1, 2;
1, 2, 1, 3, 1, 2, 1, 4;
1, 1, 2, 1, 1, 2, 1, 1, 3;
1, 2, 1, 2, 2, 2, 1, 2, 1, 4;
...
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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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