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A134838
Triangle read by rows, n-th row = first n terms of an array formed by A051731 * A051731(transform).
0
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
OFFSET
1,3
COMMENTS
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, ...).
FORMULA
Given the transform A051731 * A051731(transform), extract the first n terms of each row to form the triangle.
EXAMPLE
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;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Nov 12 2007
STATUS
approved