|
Search: id:A134637
|
|
|
| A134637 |
|
Triangle, T(n,k) = T(n-1,k) + T(n-1,k-1), 1<=k<=n; given borders consist of the Tetrahedral numbers. |
|
+0
2
|
|
| 1, 4, 4, 10, 8, 10, 20, 18, 18, 20, 35, 38, 36, 38, 35, 56, 73, 34, 74, 73, 56, 84, 129, 147, 148, 147, 129, 84, 120, 213, 276, 295, 295, 276, 213, 120
(list; table; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
Row sums = A134638: (1, 8, 28, 76, 182, 406,...).
|
|
FORMULA
|
Triangle, given borders = A000292, then apply Pascal's rule.
|
|
EXAMPLE
|
First few rows of the triangle are:
1;
4, 4;
10, 8, 10;
20, 18, 18, 20;
35, 38, 36, 38, 35;
56, 73, 74, 74, 73, 56;
...
|
|
CROSSREFS
|
Cf. A000292, A134638.
Sequence in context: A120395 A007426 A050348 this_sequence A078910 A140234 A101256
Adjacent sequences: A134634 A134635 A134636 this_sequence A134638 A134639 A134640
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 04 2007
|
|
|
Search completed in 0.002 seconds
|
