|
| |
|
|
A140750
|
|
Triangle read by rows, X^n * [1,0,0,0,...]; where X = an infinite tridiagonal matrix with (1,0,1,0,1,...) in the main and subsubdiagonals and (1,1,1,...) in the subdiagonal.
|
|
2
| |
|
|
1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 5, 3, 5, 1, 1, 1, 1, 7, 5, 13, 5, 7, 1, 1, 1, 1, 9, 7, 25, 13, 25, 7, 9, 1, 1, 1, 1, 11, 9, 41, 25, 63, 25, 41, 9, 11, 1, 1, 1, 1, 13, 11, 61, 41, 129, 63, 129, 41, 61, 11, 13, 1, 1
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,7
|
|
|
COMMENTS
| Row sums = A001333 starting (1, 3, 7, 17, 41, 99, 239,...).
|
|
|
EXAMPLE
| First few rows of the triangle are:
1;
1, 1, 1;
1, 1, 3, 1, 1;
1, 1, 5, 3, 5, 1, 1;
1, 1, 7, 5, 13, 5, 7, 1, 1;
1, 1, 9, 7, 25, 13, 25, 7, 9, 1, 1;
1, 1, 11, 9, 41, 25, 63, 25, 41, 9, 11, 1, 1;
1, 1, 13, 11, 61, 41, 129, 63, 129, 41, 61, 11, 13, 1, 1;
...
|
|
|
CROSSREFS
| Cf. A001333, A140751.
Sequence in context: A131324 A079724 A111368 * A028264 A010122 A058663
Adjacent sequences: A140747 A140748 A140749 * A140751 A140752 A140753
|
|
|
KEYWORD
| nonn,tabl
|
|
|
AUTHOR
| Gary W. Adamson & Roger L. Bagula (qntmpkt(AT)yahoo.com), May 26 2008
|
| |
|
|
