|
| |
|
|
A127568
|
|
Triangle, row sums = A105479.
|
|
1
| |
|
|
1, 1, 1, 1, 1, 2, 1, 1, 2, 5, 1, 1, 2, 5, 15, 1, 1, 2, 5, 15, 52, 1, 1, 2, 5, 15, 52, 203
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,6
|
|
|
COMMENTS
| Row sums = A105479, (1 3, 12, 50, 225,...) A127567 = M * Q
|
|
|
FORMULA
| k-th column is comprised solely of A000110(n); where A000110 = the Bell sequence: (1, 1, 2, 5, 15, 52, 203,...). Q * M, as infinite lower triangular matrices; Q = [1; 1, 1; 1, 1, 1;...] and M = the Bell sequence in the main diagonal and the rest zeros.
|
|
|
EXAMPLE
| First few rows of the triangle are:
1;
1, 1;
1, 1, 2;
1, 1, 2, 5;
1, 1, 2, 5, 15;
1, 1, 2, 5, 15, 52;
...
|
|
|
CROSSREFS
| Cf. A105479, A000110, A127567.
Sequence in context: A000361 A135723 A125311 * A143364 A159046 A029937
Adjacent sequences: A127565 A127566 A127567 * A127569 A127570 A127571
|
|
|
KEYWORD
| nonn,tabl,uned
|
|
|
AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 19 2007
|
| |
|
|
