|
| |
|
|
A122917
|
|
Riordan array (1/(1+x+x^2),x/(1+x)^2).
|
|
2
| |
|
|
1, -1, 1, 0, -3, 1, 1, 5, -5, 1, -1, -6, 14, -7, 1, 0, 6, -29, 27, -9, 1, 1, -6, 50, -76, 44, -11, 1, -1, 7, -77, 175, -155, 65, -13, 1, 0, -9, 111, -351, 441, -274, 90, -15, 1, 1, 11, -154, 638, -1078, 924, -441
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,5
|
|
|
COMMENTS
| Row sums are A122918. Inverse is A122919.
|
|
|
EXAMPLE
| Triangle begins
1,
-1, 1,
0, -3, 1,
1, 5, -5, 1,
-1, -6, 14, -7, 1,
0, 6, -29, 27, -9, 1,
1, -6, 50, -76, 44, -11, 1,
-1, 7, -77, 175, -155, 65, -13, 1
|
|
|
CROSSREFS
| Sequence in context: A131767 A026780 A026703 * A096583 A130154 A134398
Adjacent sequences: A122914 A122915 A122916 * A122918 A122919 A122920
|
|
|
KEYWORD
| easy,sign,tabl
|
|
|
AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Sep 19 2006
|
| |
|
|
