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A136787 Triangle read by rows: A107131 * A000012. 2
1, 1, 1, 2, 2, 1, 4, 4, 4, 1, 9, 9, 9, 7, 1, 21, 21, 21, 21, 11, 1, 51, 51, 51, 51, 46, 16, 1, 127, 127, 127, 127, 127, 92, 22, 1, 323, 323, 323, 323, 323, 309, 169, 29, 1, 835, 835, 835, 835, 835, 835, 709, 289, 37, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Row sums = A005773 starting (1, 2, 5, 13, 35, 96, 267, ...).
Leftmost column = A001006: (1, 1, 2, 4, 9, 21, 51, ...).
LINKS
FORMULA
A107131 * A000012 as infinite lower triangular matrices.
EXAMPLE
First few rows of the triangle:
1;
1, 1;
2, 2, 1;
4, 4, 4, 1;
9, 9, 9, 7, 1;
21, 21, 21, 21, 11, 1;
51, 51, 51, 51, 46, 16, 1;
127, 127, 127, 127, 127, 92, 22, 1;
...
CROSSREFS
Sequence in context: A061436 A214095 A213948 * A165038 A305191 A261357
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jan 21 2008
STATUS
approved

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)