|
Search: id:A117568
|
|
|
| A117568 |
|
Riordan array ((1-x^3)/(1+x^2),x). |
|
+0
3
|
|
| 1, 0, 1, -1, 0, 1, -1, -1, 0, 1, 1, -1, -1, 0, 1, 1, 1, -1, -1, 0, 1, -1, 1, 1, -1, -1, 0, 1, -1, -1, 1, 1, -1, -1, 0, 1, 1, -1, -1, 1, 1, -1, -1, 0, 1, 1, 1, -1, -1, 1, 1, -1, -1, 0, 1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 0, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 0, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 0, 1
(list; table; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
COMMENT
|
Inverse of number triangle A117567. Row sums are A117569. Diagonal sums are A102560.
|
|
EXAMPLE
|
Triangle begins
1,
0, 1,
-1, 0, 1,
-1, -1, 0, 1,
1, -1, -1, 0, 1,
1, 1, -1, -1, 0, 1,
-1, 1, 1, -1, -1, 0, 1,
-1, -1, 1, 1, -1, -1, 0, 1,
1, -1, -1, 1, 1, -1, -1, 0, 1
|
|
CROSSREFS
|
Adjacent sequences: A117565 A117566 A117567 this_sequence A117569 A117570 A117571
Sequence in context: A127245 A088150 A117567 this_sequence A093521 A000480 A118251
|
|
KEYWORD
|
easy,sign,tabl
|
|
AUTHOR
|
Paul Barry (pbarry(AT)wit.ie), Mar 29 2006
|
|
|
Search completed in 0.002 seconds
|
