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A144034 Eigentriangle read by rows, T(n,k) = A123932(n-k+1)*A046717(k) 0
1, 4, 1, 4, 4, 5, 4, 4, 20, 13, 4, 4, 20, 52, 41, 4, 4, 20, 52, 164, 121, 4, 4, 20, 52, 164, 484, 365, 4, 4, 20, 52, 164, 484, 1460, 1093, 4, 4, 20, 52, 164484, 1460, 4372, 3281, 4, 4, 20, 52, 164, 484, 1460, 4372, 13124, 9841 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row sums = A046717 shifted: (1, 5, 13, 41, 121,...). Right border = A046717.
Sum of n-th row terms = rightmost term of (n+1)-th row.
LINKS
FORMULA
Eigentriangle read by rows, T(n,k) = A123932(n-k+1)*A046717(k)
EXAMPLE
First few rows of the triangle =
1;
4, 1;
4, 4, 5;
4, 4, 20, 13;
4, 4, 20, 52, 41;
4, 4, 20, 52, 164, 121;
4, 4, 20, 52, 164, 484, 365;
...
Row 4 = (4, 4, 20, 13) = termwise products (4, 4, 4, 1) and (1, 1, 5, 13).
CROSSREFS
Sequence in context: A145079 A196222 A035646 * A366887 A204714 A341100
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Sep 07 2008
STATUS
approved

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Last modified March 19 09:40 EDT 2024. Contains 370981 sequences. (Running on oeis4.)