|
Search: id:A054250
|
|
|
| A054250 |
|
Triangular array given by Maple code below. |
|
+0
2
|
|
| 1, 1, 1, 1, 2, 3, 1, 3, 5, 8, 1, 4, 7, 12, 20, 1, 5, 9, 16, 28, 45, 1, 6, 11, 20, 36, 60, 95, 1, 7, 13, 24, 44, 75, 122, 191, 1, 8, 15, 28, 52, 90, 149, 238, 365, 1, 9, 17, 32, 60, 105, 176, 285, 444, 676, 1, 10, 19, 36, 68, 120, 203, 332, 523, 806, 1211
(list; table; graph; listen)
|
|
|
OFFSET
|
0,5
|
|
|
EXAMPLE
|
1; 1,1; 1,2,3; 1,3,5,8; 1,4,7,12,20; ...
|
|
MAPLE
|
A054250 := proc(n, k) option remember; local j; if k = 0 then RETURN(1) else add( (n-j+1)*A054250(j, k-j), j=1..min(n, k) ); fi; end;
|
|
CROSSREFS
|
Used in A001523.
Sequence in context: A099471 A121775 A127951 this_sequence A067337 A047973 A020501
Adjacent sequences: A054247 A054248 A054249 this_sequence A054251 A054252 A054253
|
|
KEYWORD
|
nonn,tabl,easy
|
|
AUTHOR
|
njas, May 06 2000
|
|
|
Search completed in 0.002 seconds
|
