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A168533
Triangle read by rows, A000012 * A168532, as infinite lower triangular matrices.
1
1, 2, 1, 4, 1, 1, 7, 2, 1, 1, 13, 2, 1, 1, 1, 20, 4, 2, 1, 1, 1, 34, 4, 2, 1, 1, 1, 1, 51, 7, 2, 2, 1, 1, 1, 1, 78, 7, 4, 2, 1, 1, 1, 1, 1, 112, 13, 4, 2, 2, 2, 21, 1, 1, 167, 13, 4, 2, 2, 1, 1, 1, 1, 1, 1, 230, 20, 7, 4, 2, 2, 21, 1, 1, 1, 1, 1
OFFSET
1,2
COMMENTS
Row sums = A026905: (1, 3, 6, 11, 18, 29, 44, 66,...)
Triangle A168534 = A168532 * A000012
FORMULA
Triangle read by rows, A000012 * A168532; where A000012 = an infinite lower
triangular matrix with all 1's. The operation takes partial sums of A168532
column terms.
EXAMPLE
First few rows of the triangle =
1;
2, 1;
4, 1, 1;
7, 2, 1, 1;
13, 2, 1, 1, 1;
20, 4, 2, 1, 1, 1;
34, 4, 2, 1, 1, 1, 1;
51, 7, 2, 2, 1, 1, 1, 1;
78, 7, 4, 2, 1, 1, 1, 1, 1;
112, 13, 4, 2, 2, 1, 1, 1, 1, 1;
167, 13, 4, 2, 2, 1, 1, 1, 1, 1, 1;
230, 20, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1;
330, 20, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1;
449, 34, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1;
616, 34, 13, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1;
825, 51, 13, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1;
1121, 51, 13, 7, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1;
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Nov 28 2009
STATUS
approved