A143778 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 3 | | 2 |
| | | | | | | 1 | | 6 | | 12 | | 6 |
| | | | | | 1 | | 10 | | 40 | | 60 | | 25 |
| | | | | 1 | | 15 | | 100 | | 300 | | 375 | | 136 |
| | | | 1 | | 21 | | 210 | | 1050 | | 2625 | | 2856 | | 927 |
| | | 1 | | 18 | | 392 | | 2940 | | 12250 | | 26656 | | 25956 | | 7690 |
| | 1 | | 36 | | 672 | | 7056 | | 44100 | | 15993 | | 311472 | | 276840 | | 75913 |
|
A143778 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 3 | 6 | 10 | 15 | 21 | 18 | 36
| 2 | 12 | 40 | 100 | 210 | 392 | 672
| 6 | 60 | 300 | 1050 | 2940 | 7056
| 25 | 375 | 2625 | 12250 | 44100
| 136 | 2856 | 26656 | 15993
| 927 | 25956 | 311472
| 7690 | 276840
| 75913
|
A143778 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 6 | 10 | 15 | 21 | 18 | 36
| | | 2 | 12 | 40 | 100 | 210 | 392 | 672
| | | | 6 | 60 | 300 | 1050 | 2940 | 7056
| | | | | 25 | 375 | 2625 | 12250 | 44100
| | | | | | 136 | 2856 | 26656 | 15993
| | | | | | | 927 | 25956 | 311472
| | | | | | | | 7690 | 276840
| | | | | | | | | 75913
|
|