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A174715 Triangle read by rows, Q*M as infinite lower triangular matrices. Q = A001935 shifted down four times by columns, M = A174712. 4
1, 1, 2, 3, 4, 1, 6, 1, 9, 2, 12, 3, 16, 4, 2, 22, 6, 2, 29, 9, 4, 38, 12, 6, 50, 16, 8, 3, 64, 22, 12, 3, 82, 29, 18, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
Row sums = A000041, the partition numbers.
Refer to comments in A174713.
LINKS
FORMULA
As an irregular triangle generated from a product Q*M of infinite lower triangular matrices: Q = A001935 in every column (except column 0), shifted down four times from the previous column. M = A174712, the diagonalized variant of A000041 (the partition numbers as the right border, and the rest zeros.)
EXAMPLE
First few rows of the triangle =
1;
1;
2;
3;
4, 1;
6, 1;
9, 2;
12, 3;
16, 4, 2;
22, 6, 2;
29, 9, 4;
38, 12, 6;
50, 16, 8, 3;
64, 22, 12, 3;
82, 29, 18, 6;
...
CROSSREFS
Sequence in context: A065331 A066262 A195989 * A069817 A071439 A100941
KEYWORD
nonn,tabf,uned
AUTHOR
Gary W. Adamson, Mar 27 2010
STATUS
approved

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)