|
Search: id:A131402
|
|
| |
|
| 1, 1, 1, 1, 3, 1, 1, 4, 4, 1, 1, 6, 7, 6, 1, 7, 14, 14, 7, 1, 1, 9, 20, 33, 20, 9, 11, 10, 31, 56, 56, 31, 10, 1, 1, 12, 40, 97, 111, 97, 40, 12, 1, 1, 13, 55, 142, 217, 217, 142, 55, 13, 1
(list; table; graph; listen)
|
|
|
OFFSET
|
0,5
|
|
|
COMMENT
|
Row sums = A131403: (1, 2, 5, 10, 21, 44, 93,...).
|
|
FORMULA
|
2*A007318 - (A046854 + A065941 - A000012) as infinite lower triangular matrices.
|
|
EXAMPLE
|
First few rows of the triangle are:
1;
1, 1;
1, 3, 1;
1, 4, 4, 1;
1, 6, 7, 6, 1;
1, 7, 14, 14, 7, 1;
1, 9, 20, 33, 20, 9, 1;
1, 10, 31, 56, 56, 31, 10, 1;
...
|
|
CROSSREFS
|
Cf. A046854, A065941, A131403.
Sequence in context: A050177 A013580 A026670 this_sequence A026626 A136482 A026648
Adjacent sequences: A131399 A131400 A131401 this_sequence A131403 A131404 A131405
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 07 2007
|
|
|
Search completed in 0.002 seconds
|
