|
Search: id:A159854
|
|
|
| A159854 |
|
Riordan array (1-x,x/(1-x)). |
|
+0
1
|
|
| 1, -1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 2, 1, 0, 0, 1, 3, 3, 1, 0, 0, 1, 4, 6, 4, 1, 0, 0, 1, 5, 10, 10, 5, 1, 0, 0, 1, 6, 15, 20, 15, 6, 1, 0, 0, 1, 7, 21, 35, 35, 21, 7, 1, 0, 0, 1, 8, 28, 56, 70, 56, 28, 8, 1, 0, 0, 1, 9, 36, 84, 126, 126, 84, 36, 9, 1, 0, 0, 1, 10, 45, 120, 210, 252, 210, 120
(list; table; graph; listen)
|
|
|
OFFSET
|
0,14
|
|
|
EXAMPLE
|
Triangle begins : 1 ; -1,1 ; 0,0,1 ; 0,0,1,1 ; 0,0,1,2,1 ; 0,0,1,3,3,1 ; ...
|
|
CROSSREFS
|
Cf. A007318
Cf. A144225. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 24 2009]
Sequence in context: A115363 A036867 A036866 this_sequence A144225 A017837 A127840
Adjacent sequences: A159851 A159852 A159853 this_sequence A159855 A159856 A159857
|
|
KEYWORD
|
easy,sign,tabl
|
|
AUTHOR
|
Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 24 2009
|
|
|
Search completed in 0.002 seconds
|
