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A140583
Triangle read by rows, A140581 * A000012.
1
1, 2, 1, 3, 1, 1, 2, 2, 1, 1, 5, 1, 1, 1, 1, 1, 4, 2, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 6, 2, 2, 2, 1, 1, 1, 1, 1, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1
OFFSET
1,2
COMMENTS
Left column = A014963: (1, 2, 3, 2, 5, 1, 7, 2, 3, 1, 11, ...).
Row sums = A140584: (1, 3, 5, 6, 9, 10, 13, ...).
FORMULA
Triangle read by rows, A140581 * A000012; where A000012 = the infinite lower triangular matrix with all 1's and the rest zeros: [1; 1,1; 1,1,1; ...].
EXAMPLE
First few rows of the triangle:
1;
2, 1;
3, 1, 1;
2, 2, 1, 1;
5, 1, 1, 1, 1;
1, 4, 2, 1, 1, 1;
7, 1, 1, 1, 1, 1, 1;
2, 2, 2, 2, 1, 1, 1, 1;
3, 3, 3, 1, 1, 1, 1, 1, 1;
1, 6, 2, 2, 2, 1, 1, 1, 1, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson and Mats Granvik, May 17 2008
STATUS
approved