|
| |
| |
|
|
|
1, 1, 1, 2, 1, 2, 5, 2, 2, 5, 15, 5, 4, 5, 15, 52, 15, 10, 10, 15, 52, 203, 52, 30, 25, 30, 52, 203, 877, 203, 104, 75, 75, 104, 203, 877, 4140, 877, 406, 260, 225, 260, 406, 877, 4140, 21147, 4140, 1754, 1015, 780, 780, 1015, 1754, 4140, 21147
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,4
|
|
|
COMMENTS
| Row sums = A014322: (1, 2, 5, 14, 44, 154,...) the Bell numbers convolved with themselves.
|
|
|
FORMULA
| Triangle read by rows, T(n,k) = A000110(n-k)*A000110(k)
|
|
|
EXAMPLE
| First few rows of the triangle =
1;
1, 1;
2, 1, 2;
5, 2, 2, 5;
15, 5, 4, 5, 15;
52, 15, 10, 10, 15, 52;
203, 52, 30, 25, 30, 52, 203;
...
Row 3 = (5, 2, 2, 5) = termwise products of (1, 1, 2, 5) and (5, 2, 1, 1) = (5*1, 1*2, 2*1, 5*1).
|
|
|
CROSSREFS
| A000110, Cf. A014322
Sequence in context: A147292 A078391 A153206 * A109631 A095149 A064192
Adjacent sequences: A144152 A144153 A144154 * A144156 A144157 A144158
|
|
|
KEYWORD
| nonn,tabl
|
|
|
AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 12 2008
|
|
|
EXTENSIONS
| More terms from DELEHAM Philippe, Jan 29 2012
|
| |
|
|
