|
Search: id:A134402
|
|
|
| A134402 |
|
Triangle read by rows, for n>0, n zeros followed by n. |
|
+0
3
|
|
| 1, 0, 1, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
(list; table; graph; listen)
|
|
|
OFFSET
|
0,6
|
|
|
COMMENT
|
Multiplied by [1, 2, 3,...] gives (1, 2, 6, 12, 20, 30, 42,...).
Triangle T(n,k), read by rows, given by [0,0,0,0,0,0,0,...] DELTA [1,1,-1,1,0,0,0,0,0,...] where DELTA is the operator defined in A084938 . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 26 2007
|
|
FORMULA
|
Triangle read by rows, a(0) = 1, then for n>0, n zeros followed by n. Infinite lower triangular matrix with (1, 1, 2, 3, 4,...) in the main diagonal and the rest zeros.
|
|
EXAMPLE
|
First few rows of the triangle are:
1;
0, 1;
0, 0, 2;
0, 0, 0, 3;
0, 0, 0, 0, 4;
0, 0, 0, 0, 0, 5;
...
|
|
CROSSREFS
|
Cf. A134403, A005449.
Adjacent sequences: A134399 A134400 A134401 this_sequence A134403 A134404 A134405
Sequence in context: A059286 A076998 A083927 this_sequence A132440 A127647 A091227
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 23 2007
|
|
|
Search completed in 0.002 seconds
|
