A145890 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 2 |
| | | | | | | | | 2 | | 2 | | 6 |
| | | | | | | | 5 | | 4 | | 6 | | 20 |
| | | | | | | 14 | | 10 | | 12 | | 20 | | 70 |
| | | | | | 42 | | 28 | | 30 | | 40 | | 70 | | 252 |
| | | | | 132 | | 84 | | 84 | | 100 | | 140 | | 252 | | 924 |
| | | | 429 | | 264 | | 252 | | 280 | | 350 | | 504 | | 924 | | 3432 |
| | | 1430 | | 858 | | 792 | | 840 | | 980 | | 1260 | | 1848 | | 3432 | | 12870 |
| | 4862 | | 2860 | | 2574 | | 2640 | | 2940 | | 3528 | | 4620 | | 6864 | | 12870 | | 48620 |
|
A145890 as a square array
1 | 1 | 2 | 5 | 14 | 42 | 132 | 429 | 1430 | 4862
| 2 | 2 | 4 | 10 | 28 | 84 | 264 | 858 | 2860
| 6 | 6 | 12 | 30 | 84 | 252 | 792 | 2574
| 20 | 20 | 40 | 100 | 280 | 840 | 2640
| 70 | 70 | 140 | 350 | 980 | 2940
| 252 | 252 | 504 | 1260 | 3528
| 924 | 924 | 1848 | 4620
| 3432 | 3432 | 6864
| 12870 | 12870
| 48620
|
A145890 as an upper right triangle
1 | 1 | 2 | 5 | 14 | 42 | 132 | 429 | 1430 | 4862
| | 2 | 2 | 4 | 10 | 28 | 84 | 264 | 858 | 2860
| | | 6 | 6 | 12 | 30 | 84 | 252 | 792 | 2574
| | | | 20 | 20 | 40 | 100 | 280 | 840 | 2640
| | | | | 70 | 70 | 140 | 350 | 980 | 2940
| | | | | | 252 | 252 | 504 | 1260 | 3528
| | | | | | | 924 | 924 | 1848 | 4620
| | | | | | | | 3432 | 3432 | 6864
| | | | | | | | | 12870 | 12870
| | | | | | | | | | 48620
|
|